Can vs. Could – English Grammar Exercises for A2
You are writing a very angry 1-star review on a travel website. You stayed at this hotel last night, and it was a terrible experience because the room had zero soundproofing. Read the sentences carefully and choose the best option (A, B, C, or D) to complete your complaint.
1 “Do not stay at this hotel! I stayed here last night, and I ______ sleep at all because of the noise.”
(A) can’t
(B) couldn’t
(C) didn’t can
(D) wasn’t could
2 “The walls are like paper. I ______ clearly hear the people in the next room talking and laughing.”
(A) can
(B) could to
(C) could
(D) cans
3 “The traffic outside was so loud that we ______ even hear the TV in our own room.”
(A) can’t
(B) don’t can
(C) couldn’t to
(D) couldn’t
4 “I tried to call the reception desk at midnight to complain, but I ______ get an answer.”
(A) couldn’t
(B) can’t
(C) didn’t could
(D) wasn’t can
5 “My wife tried to read a book to relax, but she ______ focus because the music downstairs was too loud.”
(A) can’t
(B) couldn’t
(C) didn’t can
(D) couldn’t to
6 “At 2 AM, some guests were shouting in the hallway. I ______ believe how rude they were!”
(A) can’t
(B) couldn’t
(C) don’t can
(D) wasn’t could
7 “My husband went downstairs to ask for a quieter room, but the manager said he ______ move us.”
(A) can’t
(B) not could
(C) couldn’t
(D) didn’t could
8 “The window was broken and stuck, so I ______ close it completely to block the street noise.”
(A) couldn’t
(B) can’t
(C) don’t can
(D) couldn’t to
9 “Because the window was open, we ______ feel the cold wind blowing into the room all night.”
(A) can
(B) could
(C) cans
(D) are could
10 “To make things worse, the air conditioning made a terrible sound, and we ______ turn it off.”
(A) can’t
(B) didn’t can
(C) couldn’t
(D) not could
11 “My kids were so tired from traveling, but they ______ fall asleep until 4:00 AM.”
(A) couldn’t
(B) can’t
(C) didn’t could
(D) don’t can
12 “I paid $200 for this room, but I ______ get a single hour of rest yesterday.”
(A) can’t
(B) couldn’t
(C) wasn’t can
(D) couldn’t to
13 “When I complained this morning, the receptionist said she ______ give me a refund.”
(A) can’t
(B) couldn’t
(C) didn’t can
(D) don’t could
14 “I am so exhausted right now that I ______ even drive my car safely today.”
(A) couldn’t
(B) can’t
(C) didn’t can
(D) wasn’t could
15 “Last night, I tried to wear earplugs, but I ______ find them in my suitcase in the dark.”
(A) can’t
(B) don’t can
(C) couldn’t
(D) couldn’t to
16 “The bathroom door was also stuck, and my husband ______ open it for ten minutes.”
(A) couldn’t
(B) can’t
(C) didn’t could
(D) wasn’t can
17 “The bed was so hard and uncomfortable that I ______ find a good position to rest.”
(A) can’t
(B) couldn’t
(C) didn’t can
(D) don’t can
18 “We wanted to leave very early this morning, but we ______ find anyone at the front desk at 6 AM.”
(A) couldn’t
(B) can’t
(C) don’t could
(D) didn’t can
19 “I definitely ______ recommend this terrible hotel to anyone looking for a place to stay.”
(A) couldn’t
(B) can’t
(C) didn’t can
(D) wasn’t could
20 “We packed our bags quickly because we ______ wait to leave that awful place this morning.”
(A) can’t
(B) couldn’t
(C) don’t can
(D) didn’t could
ANSWER KEY & EXPLANATIONS
1 Key: (B) couldn’t
Explanation: – Why it’s correct: “Last night” places the action in the past. You lacked the ability to sleep, so you must use “couldn’t”.
- Why others are wrong: (A) “Can’t” is for the present. (C) “Didn’t can” and (D) “Wasn’t could” are major grammatical errors (we never use do/did/was with can/could).
2 Key: (C) could
Explanation: – Why it’s correct: Describing a past ability (being able to hear the neighbors last night).
- Why others are wrong: (A) is present. (B) has an illegal “to” after the modal. (D) has an illegal “-s”.
3 Key: (D) couldn’t
Explanation: – Why it’s correct: A past inability to hear the TV due to the traffic.
- Why others are wrong: (A) is present. (B) uses “don’t”. (C) has an illegal “to”.
4 Key: (A) couldn’t
Explanation: – Why it’s correct: “I tried to call… at midnight” (past). The failure to get an answer happened in the past.
- Why others are wrong: (B) is present. (C) “Didn’t could” is invalid grammar.
5 Key: (B) couldn’t
Explanation: – Why it’s correct: “My wife tried” (past). She lacked the ability to focus last night.
- Why others are wrong: (A) is present. (C) uses “didn’t”. (D) adds “to”.
6 Key: (B) couldn’t
Explanation: – Why it’s correct: “At 2 AM… guests were shouting” refers to the past situation. The feeling of disbelief happened then.
- Why others are wrong: (A) is present. (C) and (D) are invalid structures.
7 Key: (C) couldn’t
Explanation: – Why it’s correct: “The manager said” (past). He lacked the ability/authority to move the guests last night.
- Why others are wrong: (A) is present. (B) “Not could” is the wrong word order; it must be “could not” or “couldn’t”.
8 Key: (A) couldn’t
Explanation: – Why it’s correct: “The window was broken” (past). You were unable to close it.
- Why others are wrong: (B) is present. (C) and (D) are invalid.
9 Key: (B) could
Explanation: – Why it’s correct: “The window was open” (past). You had the physical ability/sensation of feeling the wind.
- Why others are wrong: (A) is present. (C) and (D) are invalid grammar.
10 Key: (C) couldn’t
Explanation: – Why it’s correct: “The air conditioning made…” (past). The inability to turn it off happened last night.
- Why others are wrong: (A) is present. (B) and (D) are invalid.
11 Key: (A) couldn’t
Explanation: – Why it’s correct: “My kids were” (past). They lacked the ability to sleep.
- Why others are wrong: (B) is present. (C) and (D) are invalid.
12 Key: (B) couldn’t
Explanation: – Why it’s correct: “I paid… yesterday”. The lack of rest happened in the past.
- Why others are wrong: (A) is present. (C) and (D) are invalid.
13 Key: (B) couldn’t
Explanation: – Why it’s correct: “When I complained this morning…”. The receptionist’s refusal/inability to refund happened in the past.
- Why others are wrong: (A) is present. (C) and (D) are invalid.
14 Key: (B) can’t
Explanation: – Why it’s correct: Notice the time shift! “I am so exhausted right now” and “today“. Because you are talking about your inability to drive safely in the present moment, you must use “can’t”.
- Why others are wrong: (A) “Couldn’t” is for the past. (C) and (D) are invalid.
15 Key: (C) couldn’t
Explanation: – Why it’s correct: “Last night” shifts the timeline back to the past inability to find the earplugs.
- Why others are wrong: (A) is present. (B) and (D) are invalid.
16 Key: (A) couldn’t
Explanation: – Why it’s correct: “The door was stuck” (past). The husband lacked the ability to open it.
- Why others are wrong: (B) is present. (C) and (D) are invalid.
17 Key: (B) couldn’t
Explanation: – Why it’s correct: “The bed was so hard” (past).
- Why others are wrong: (A) is present. (C) and (D) are invalid.
18 Key: (A) couldn’t
Explanation: – Why it’s correct: “We wanted to leave… this morning”. The failure to find the staff happened in the past.
- Why others are wrong: (B) is present. (C) and (D) are invalid.
19 Key: (B) can’t
Explanation: – Why it’s correct: Writing the review in the present moment, stating a current, general truth: “I absolutely cannot recommend this place to anyone right now.”
- Why others are wrong: (A) “Couldn’t” would mean you were unable to recommend it in the past, but the recommendation (the review) is happening now.
20 Key: (B) couldn’t
Explanation: – Why it’s correct: “We packed our bags… this morning” (past). “Couldn’t wait” is a common phrase meaning you were extremely eager to do something in the past.
- Why others are wrong: (A) is present. (C) and (D) are invalid.
GRAMMAR POINTS TO REMEMBER
- Past Inability (Couldn’t):
- When you tell a story about a bad experience that is already finished (like a terrible night at a hotel), you must use couldn’t to talk about things you were unable to do.
- Example: “I couldn’t sleep last night.” (I wanted to sleep, but the noise stopped me).
- Present Inability (Can’t):
- Use can’t when the inability is happening right now as you are speaking or writing.
- Example: “I am so tired today that I can’t drive.”
- Look for the “Time Clues”:
- If the sentence has words like last night, yesterday, at 2 AM, was, tried, or said, the action is in the past -> use couldn’t.
- If the sentence has words like right now, today, am, is, or definitely, the action is in the present -> use can’t.
- The Grammar “Danger Zone” (Never do this!):
- Modals do not need auxiliary verbs like do, did, was, or were.
- Correct: I couldn’t open the door.
- Wrong: I didn’t could open the door.
- Modals are never followed by to.
- Correct: I couldn’t sleep.
- Wrong: I couldn’t to sleep.