Prepositions of Time & Place (In, On, At) – English Grammar Exercises for B1
You are writing a formal email to all department members to finalize the schedule and location for an upcoming project meeting. Choose the correct preposition of time or place (A, B, or C) to ensure everyone has the exact coordinates.
1 Dear team, please be informed that our next project meeting will be held ______ Monday.
(A) in
(B) on
(C) at
2 We have a lot of topics to cover, so please make sure to be there ______ 10:00 AM sharp.
(A) at
(B) on
(C) in
3 We will not be meeting in the lobby; please take a seat directly ______ the main conference room.
(A) at
(B) in
(C) on
4 This project is urgent because the final product must be launched ______ December.
(A) in
(B) on
(C) at
5 For those who are new, the conference room is located ______ the third floor of our building.
(A) in
(B) on
(C) at
6 We purposely scheduled this brainstorming session ______ the morning so everyone is full of energy.
(A) on
(B) at
(C) in
7 If we do not finish the agenda by noon, we can continue discussing it ______ lunchtime.
(A) in
(B) on
(C) at
8 I have already left the printed financial reports ______ the large meeting table for you to review.
(A) at
(B) in
(C) on
9 We will also have a brief follow-up session ______ Friday afternoon to review our progress.
(A) in
(B) on
(C) at
10 If you need a visitor badge for your clients, please wait for them ______ the reception desk.
(A) in
(B) at
(C) on
11 Please remember that all new project guidelines will officially take effect ______ the 1st of November.
(A) in
(B) on
(C) at
12 The project manager is currently ______ a taxi, but she will arrive shortly.
(A) on
(B) at
(C) in
13 Our regional director will join us via video call because he is currently commuting ______ the train.
(A) in
(B) on
(C) at
14 As a reminder, our department was completely restructured ______ 2022 to handle these larger projects.
(A) in
(B) on
(C) at
15 We have a very tight schedule today, so it is crucial that everyone arrives exactly ______ time.
(A) on
(B) in
(C) at
16 For the external partners joining us, our headquarters is located ______ 450 Madison Avenue.
(A) in
(B) on
(C) at
17 However, if you need to visit the marketing department later, their office is located just down the street ______ Broadway.
(A) in
(B) on
(C) at
18 I usually review my presentation notes late ______ night, so please email me any last-minute changes before then.
(A) in
(B) at
(C) on
19 If you need to access the digital slides before we start, I have uploaded them ______ the company’s shared drive.
(A) in
(B) on
(C) at
20 We will finalize the budget and assign tasks ______ the end of the meeting.
(A) at
(B) in
(C) on
ANSWER KEY & EXPLANATIONS
1 (B) on
Explanation: We use “on” for specific days of the week (e.g., on Monday, on Tuesday). (A) is for months/years, and (C) is for exact clock times.
2 (A) at
Explanation: We use “at” for specific clock times (e.g., at 10:00 AM, at 5 o’clock).
3 (B) in
Explanation: We use “in” to emphasize being inside an enclosed, 3-dimensional space (e.g., in the conference room, in the office). (A) “at” would mean the general location, but the prompt emphasizes taking a seat inside the room.
4 (A) in
Explanation: We use “in” for months, years, and seasons (e.g., in December, in 2023, in winter).
5 (B) on
Explanation: We use “on” for floors of a building (e.g., on the first floor, on the third floor). It acts as a flat surface.
6 (C) in
Explanation: For general parts of the day, we use “in” (e.g., in the morning, in the afternoon, in the evening).
7 (C) at
Explanation: We use “at” for specific mealtimes and brief periods associated with the time of day (e.g., at lunchtime, at breakfast, at noon).
8 (C) on
Explanation: We use “on” for flat surfaces. The reports are resting on top of the table.
9 (B) on
Explanation: This is a classic B1 trap. Normally, we say “in the afternoon”. However, if a specific day is attached (e.g., Friday afternoon), the specific day overrides the rule, and we MUST use “on”.
10 (B) at
Explanation: We use “at” for a specific point, hub, or meeting place (e.g., at the reception desk, at the bus stop, at the door).
11 (B) on
Explanation: We always use “on” for specific calendar dates (e.g., on the 1st of November, on May 4th).
12 (C) in
Explanation: For small, private vehicles where you must sit down immediately and cannot walk around (like a car or a taxi), we use “in”.
13 (B) on
Explanation: For large public transport vehicles with a floor you can stand and walk on (like a train, bus, or airplane), we use “on”.
14 (A) in
Explanation: We use “in” for specific years (e.g., in 2022, in 1999).
15 (A) on
Explanation: “On time” means exactly at the planned time (punctual). “In time” means early enough to do something. The context “exactly… so we don’t delay” demands “on time”.
16 (C) at
Explanation: When you provide an exact, specific address with a building number, you must use “at” (e.g., at 450 Madison Avenue).
17 (B) on
Explanation: When you name a street, road, or avenue without a specific building number, you use “on” (e.g., on Broadway, on Main Street).
18 (B) at
Explanation: “At night” is a fixed exception in English grammar. While we use “in” for other parts of the day (in the morning/afternoon), we must always say “at night”.
19 (B) on
Explanation: For digital platforms, computer drives, screens, and the internet, we use “on” (e.g., on the shared drive, on the computer, on the website).
20 (A) at
Explanation: The phrase “at the end of [something]” is used for a specific point in time when an event concludes (e.g., at the end of the meeting, at the end of the month).
GRAMMAR POINTS TO REMEMBER
1 The “In, On, At” Time Triangle:
- IN (Broad Time): Months, Years, Seasons, Parts of the day (in December, in 2024, in the morning).
- ON (Specific Days): Days of the week, exact dates, and specific day parts (on Monday, on November 1st, on Friday afternoon).
- AT (Exact Time): Clock times, mealtimes, and the word “night” (at 10:00 AM, at lunchtime, at night).
2 The “In, On, At” Place Triangle:
- IN (Enclosed Space): Rooms, buildings, cities, and countries (in the conference room, in Tokyo, in the box).
- ON (Surfaces & Streets): Tables, floors, streets (without numbers), large transport, and digital spaces (on the table, on the 3rd floor, on Broadway, on the train, on the server).
- AT (Specific Points): Exact addresses with numbers, and meeting hubs (at 450 Madison Ave, at the reception desk, at the station).
3 “On Time” vs. “In Time”:
- Use On time when you mean “punctual” or happening exactly at the scheduled time (The meeting started on time.)
- Use In time when you mean “with enough time to spare” before something happens (I arrived in time to grab a coffee before the meeting.)