Mixed Tenses (12 Tenses) – English Grammar Exercises for B2

1  C happened

• Why it is correct: The action started and finished entirely in the past at a specific time (“last summer”), requiring the Past Simple.
• Distractor Analysis: (A) Common Mistake: Learners often mistakenly use the continuous tense just because they are narrating a story. (B) Structural Error: Wrong tense for a past time marker. (D) Strong Distractor: There is no subsequent past action in the same sentence to justify the Past Perfect.

2  B were driving

• Why it is correct: Past Continuous is used for a longer background action that was in progress when a shorter action (“caught fire”) interrupted it.
• Distractor Analysis: (C) Common Mistake: Using Past Simple loses the “in progress” aspect of the interrupted action. (D) Structural Error: Present Continuous does not fit a past narrative. (A) Strong Distractor: Past Perfect doesn’t fit the “while” clause indicating an ongoing interruption.

3  B had already left

• Why it is correct: The flight’s departure happened before another specific past action (“arrived”), which necessitates the Past Perfect.
• Distractor Analysis: (C) Common Mistake: Ignoring the chronological sequence of events and simply using Past Simple. (D) Structural Error: Incorrect verb form (should be the past participle “left”). (A) Strong Distractor: Past Continuous changes the meaning to “was in the process of leaving,” which contradicts the word “already.”

4  A have had

• Why it is correct: Present Perfect is used for experiences accumulated up to the present moment (“in my life”).
• Distractor Analysis: (C) Common Mistake: Using Past Simple when seeing the word “life,” ignoring the fact that the speaker’s life is still ongoing. (D) Structural Error: Incorrect grammatical structure (“have has”). (B) Strong Distractor: Past Continuous is entirely inappropriate for counting life experiences.

5  D is going to be

• Why it is correct: In a direct quotation, the original perspective is kept. “Be going to” is used for predictions based on clear, immediate evidence (the ongoing chaotic situation).
• Distractor Analysis: (B) Common Mistake: Overusing “will” for a prediction when there is already clear present evidence. (A) Structural Error: Missing the preposition “to”. (C) Strong Distractor: Backshifting to Past Simple (“was”) is a mistake here because it’s a direct quote, not reported speech.

6  C booked

• Why it is correct: Past Simple is used for consecutive, completed actions in a past narrative sequence.
• Distractor Analysis: (A) Common Mistake: Using Present Perfect for an action completed in a finished past period. (B) Structural Error: Missing an auxiliary verb. (D) Strong Distractor: Placing the action in the Past Perfect implies they booked the new flight before the disaster, which is chronologically backwards.

7  A had been waiting

• Why it is correct: Past Perfect Continuous emphasizes the duration of an ongoing action (“for five hours”) that occurred before another past event (“announced”).
• Distractor Analysis: (B) Common Mistake: Using Past Continuous while ignoring the cumulative duration (“for five hours”). (D) Structural Error: Incorrect passive voice. (C) Strong Distractor: Present Perfect Continuous breaks the timeline of the past narrative.

8  C had lost

• Why it is correct: The realization happened in the past (“went… to realize”), but the action of losing the bags occurred even before that realization, requiring Past Perfect.
• Distractor Analysis: (B) Common Mistake: Using Past Simple disrupts the timeline and logic of the narrative. (D) Structural Error: Mixing Present Perfect into a purely past context. (A) Strong Distractor: Losing bags is a singular event, not a continuous process, making Past Continuous incorrect.

9  A was raining

• Why it is correct: Past Continuous describes the background scene or an ongoing situation at a specific moment in the past (“when we stepped out”).
• Distractor Analysis: (B) Common Mistake: Past Simple makes it sound as if the rain started exactly as a reaction to them stepping out. (D) Structural Error: Present Perfect Continuous does not fit a past story. (C) Strong Distractor: Past Perfect implies it had stopped raining prior to them stepping out.

10  D would be wearing

• Why it is correct: “Future in the past” — the speaker realized in the past that an action would be in progress continuously over a future period from that point (“for the next three days”).
• Distractor Analysis: (A) Common Mistake: Forgetting to backshift “will” to “would” in a past context. (B) Structural Error: Missing the main verb “be”. (C) Strong Distractor: Past Continuous doesn’t convey the future expectation covering those three days.

11  B checked

• Why it is correct: A short, completed action that ends a sequence of events in the past uses the Past Simple.
• Distractor Analysis: (C) Common Mistake: Choosing Present Perfect just because of “3 AM”, even though this action has no connection to the present. (D) Structural Error: Incorrect Past Perfect structure (missing the “-ed”). (A) Strong Distractor: Checking into a hotel is viewed as a point-in-time event here, not an interrupted ongoing process.

12  A had never experienced

• Why it is correct: The phrase “Up to that point” sets a specific deadline in the past, meaning any experiences accumulated before that require the Past Perfect.
• Distractor Analysis: (C) Common Mistake: Using Past Simple ignores the cumulative nature of the experience up to that past deadline. (D) Structural Error: Incorrect verb form (“experiencing”). (B) Strong Distractor: Present Perfect is incorrect because the reference point is “that point” (past), not “now” (present).

13  D asks

• Why it is correct: Returning to the present timeline (“Now”), Present Simple is used for habits or predictable reactions whenever a condition is met (“whenever”).
• Distractor Analysis: (C) Common Mistake: Using Present Continuous for repeated, habitual actions. (A) Structural Error: “Someone” is a singular pronoun and requires the verb to take an “-s”. (B) Strong Distractor: Present Perfect doesn’t fit the habitual “whenever” conditional structure.

14  C have been trying

• Why it is correct: Present Perfect Continuous emphasizes an action that started in the past, continues up to the present, and is still ongoing (“still haven’t replied”).
• Distractor Analysis: (A) Common Mistake: Using Present Continuous while ignoring the duration marker “for months”. (B) Structural Error: Incorrect passive structure. (D) Strong Distractor: Past Perfect Continuous is incorrect because the trying hasn’t ended in the past; it continues now.

15  D will have been waiting

• Why it is correct: Future Perfect Continuous emphasizes the continuous duration of an action (“for exactly a year”) by a specific point in the future (“Next month”).
• Distractor Analysis: (A) Common Mistake: Future Simple completely misses the continuous duration aspect. (B) Structural Error: Missing the auxiliary verb “been”. (C) Strong Distractor: Present Perfect Continuous cannot account for the “next month” future timeframe.

16  B have been warning

• Why it is correct: “Ever since” connects a past starting point to an ongoing continuous action up to the present, making Present Perfect Continuous the most natural fit.
• Distractor Analysis: (A) Common Mistake: Present Simple misses the continuous duration and connection to the past. (D) Structural Error: Missing the verb “been”. (C) Strong Distractor: Past Perfect is incorrect because the action of warning continues into the present.

17  A change

• Why it is correct: In future time clauses (after conjunctions like “until”, “when”, “as soon as”), the Present Simple (or Present Perfect) is strictly used instead of future tenses.
• Distractor Analysis: (B) Common Mistake: Learners often want to logically use “will” because the action is in the future, but English grammar rules forbid it here. (D) Structural Error: A gerund (V-ing) cannot act as the main verb of the clause. (C) Strong Distractor: Past Simple clashes completely with the future context.

18  B was

• Why it is correct: Even though the speaker is reflecting on it now (“Looking back”), the trip itself is a completely finished event in the past, requiring the Past Simple.
• Distractor Analysis: (A) Common Mistake: Choosing Present Perfect because the story has a “present result” (being a favorite story now), but the trip itself is over. (D) Structural Error: “Is being” is rarely used for completed events or past states. (C) Strong Distractor: Past Perfect is unnecessary as there is no other past action in the clause to compare it to.

19  A am going

• Why it is correct: Present Continuous is used for fixed, confirmed future arrangements and personal plans (“next week”).
• Distractor Analysis: (B) Common Mistake: Present Simple for the future is generally reserved for fixed timetables (trains, flights, movies), not personal travel plans. (D) Structural Error: Incorrect grammatical form (“am go”). (C) Strong Distractor: Future Perfect makes no sense here as the trip hasn’t even happened yet.

20  D will have had

• Why it is correct: The phrase “By the time my plane lands tomorrow” acts as a future deadline, requiring an action that will be completed before that deadline (Future Perfect).
• Distractor Analysis: (A) Common Mistake: Future Simple ignores the “by the time” deadline constraint. (C) Structural Error: Grammatically incorrect structure (“will having”). (B) Strong Distractor: Backshifting to a conditional (“would”) doesn’t fit the direct “I hope” statement.

1. Narrative Tenses:
• The backbone of a past story is always the Past Simple (for consecutive main events).
• Use Past Continuous to describe the background scene or an action in progress that was interrupted by a shorter action.
• Use Past Perfect to narrate events that happened before another past event (e.g., realizing you had lost your luggage).
2. “Up to that point” vs “Up to now”: Calculating time up to a specific point in the past requires Past Perfect. Calculating time up to the present moment requires Present Perfect.
3. Future Time Clauses: After conjunctions of time like until, when, as soon as, by the time, NEVER use “will”. You must use Present tenses (Simple or Perfect) to express a future meaning.
4. The “By” Rule:
• By + a past time marker → Past Perfect.
• By + a future time marker → Future Perfect.