Master when to use at, in or on — the three most confusing English prepositions in context.
⏱ Average time
1 to 3 min
🎯 Difficulty
Single level — 8 questions per round.
🧠 Skills exercised
English grammar · Prepositions · Context reading
How to play
Choose the correct preposition (at, in or on) to complete each sentence.
Example
"The meeting is ___ Monday afternoon." — the answer is on, because we use on with days of the week.
Tips & strategies
- 1.at = specific point (at 3pm, at the airport); in = enclosed space or period (in the box, in March); on = surface or day (on the table, on Monday).
- 2.For time: at + clock times, in + months/years/seasons, on + specific days and dates.
- 3.Exception: at night, in the morning, on the weekend — memorize these as chunks.
💡 Did you know?
English prepositions have no one-to-one mapping to Portuguese: "em" can become at, in or on depending on context — which is why they trip up even advanced learners.
Frequently asked questions
Why only at, in and on?
These three are the most commonly confused and cover the most ground in everyday English. Other prepositions may be added in future rounds.
Is there a time limit?
No — read each sentence carefully before choosing.