Auto Generated English Grammar Exercises - Grammarism - Free Printable

Let's solve each of these preposition questions step by step. The goal is to choose the correct preposition that makes each sentence grammatically correct and meaningful.

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1. I will go outside _______ I do my homework.

We need a preposition that shows time or sequence.
- "in" – doesn't fit (we don’t say "in I do my homework").
- "after" – this makes sense: *I will go outside after I do my homework.*
- "near" – doesn't make sense here.
- "above" – irrelevant.

✔ Correct answer: B. after

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2. I have been calling you _______ this morning.

This is about time — when the action started.
- "to" – not used with time like this.
- "by" – means “not later than,” but doesn’t fit well here.
- "onto" – not appropriate for time.
- "since" – yes! “Since this morning” indicates the start of an ongoing action.

✔ Correct answer: D. since

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3. I stood _______ my brother in line.

We are describing position in a line.
- "behind" – possible: *I stood behind my brother.*
- "over" – not typical for lines.
- "up" – doesn't work with "stood" in this context.
- "on" – "on my brother" doesn't make sense.

✔ Correct answer: A. behind

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Now, the next section gives us a list of prepositions to choose from:

> about, from, by, at, for, after

Let’s use them appropriately.

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4. This book is _______ a dog who saves a boy.

We need a preposition that describes content or subject matter.
- "about" – yes: *The book is about a dog...*
- "from" – no
- "by" – would mean written by, not subject
- "at" – no
- "for" – could be "for children", but not here
- "after" – no

✔ Correct answer: about

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5. I got this book _______ Kenneth.

Who gave it? We need a preposition showing source.
- "from" – yes: *I got this book from Kenneth.*
- "by" – used for authorship, e.g., "written by"
- "at" – no
- "for" – would be "for Kenneth" (giving to him)
- "after" – no

✔ Correct answer: from

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6. It was a gift _______ my birthday.

What time? The gift was given on the occasion of the birthday.
But we're choosing from: about, from, by, at, for, after.

Wait — "at" can be used with events: *at my birthday* — but usually we say for or on.

But "for" fits better: *a gift for my birthday* — meaning intended for the birthday celebration.

✔ Correct answer: for

(Though "on" would be natural, it's not among the options. So "for" is best from the list.)

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7. He gave it to me _______ my party.

When did he give it? At the time of the party.
- "at" – yes: *He gave it to me at my party.*
- "after" – possible, but less direct
- "for" – no
- "by" – no
- "from" – no
- "about" – no

✔ Correct answer: at

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8. It was written _______ a famous author.

Who wrote it?
- "by" – yes: *It was written by a famous author.*
- "from" – no
- "at" – no
- "for" – no
- "after" – no
- "about" – no

✔ Correct answer: by

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9. I will tell you about it _______ I finish reading it.

Time sequence again. When will I tell you? After finishing.
- "after" – yes: *I will tell you about it after I finish reading it.*
- "at" – too vague
- "for" – no
- "by" – "by the time" is possible, but "after" is more natural
- "from" – no
- "about" – doesn’t fit

✔ Correct answer: after

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✔ Final Answers:

1. B. after
2. D. since
3. A. behind
4. about
5. from
6. for
7. at
8. by
9. after

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📝 Explanation Summary:

Prepositions show relationships between nouns and other words — especially time, place, direction, and source. Understanding the meaning of each sentence helps pick the right one.

For example:
- after = time sequence
- since = starting point of time
- behind = physical position
- about = topic
- from = origin/source
- for = purpose or recipient
- at = specific time/event
- by = author or agent

These choices reflect standard English usage.

Let me know if you'd like this turned into a printable answer key!