Home of English Grammar

Grammar Guide
  • Home
  • Exercises
  • Matches
  • Rules
  • Tools
    • Grammar Checker
    • Very Replacer
    • Word Counter
  • Top Social Media Posts
  • Various Posts
  • Vocabulary
  • Writing Guides
  • Contact

Essential Prepositions in Idioms Exercise

March 17, 2026 - C1pdf

Complete the 12 sentences below. Choose the best answer for each one. Some sentences have two correct answers. Choose both.

Progress 0 of 12 answered
1When I’m tired, I can’t think straight, so I’m not ............... my best.
Wrong!
Use "at" in the phrase "at my best" to mean performing as well as possible.
2Please don’t laugh ............... me. I’m trying my hardest.
Wrong!
Use "at" in "laugh at someone" when someone is the target of laughter.
3I’m ............... a hurry, so I can’t stop to chat.
Wrong!
Use "in" in the fixed phrase "in a hurry".
4He’s been ............... a bad mood all morning, so I’m giving him space.
Wrong!
Use "in" in the phrase "in a bad mood".
5We’re ............... the same boat, so let’s help each other.
Wrong!
Use "in" in the idiom "in the same boat".
6I’m not ............... the mood for a long meeting today.
Wrong!
Use "in" in the phrase "in the mood for" something.
7She’s ............... charge of the project, so ask her first.
Wrong!
Use "in" in the fixed phrase "in charge of".
8I’m ............... my way to the station, so I can’t pick you up.
Wrong!
Use "on" in the phrase "on my way" when you are going somewhere.
9The kids are ............... holiday next week, so the house will be noisy.
Wrong!
Use "on" in "on holiday" to mean taking a vacation.
10I’m ............... a diet, so I’m skipping dessert tonight.
Wrong!
Use "on" in the common phrase "on a diet".
11I’m ............... the phone right now, so I’ll call you back in five minutes.
Wrong!
Use "on" in the common phrase "on the phone".
12The manager is ............... a meeting, so please wait outside.
Select 2 answers.
Wrong!
Both "at" and "in" are natural in this sentence, though "in a meeting" is more common for being unavailable.
Done.
Score: 0/12
Share your score!

Answers

  1. When I’m tired, I can’t think straight, so I’m not at my best.
  2. Please don’t laugh at me. I’m trying my hardest.
  3. I’m in a hurry, so I can’t stop to chat.
  4. He’s been in a bad mood all morning, so I’m giving him space.
  5. We’re in the same boat, so let’s help each other.
  6. I’m not in the mood for a long meeting today.
  7. She’s in charge of the project, so ask her first.
  8. I’m on my way to the station, so I can’t pick you up.
  9. The kids are on holiday next week, so the house will be noisy.
  10. I’m on a diet, so I’m skipping dessert tonight.
  11. I’m on the phone right now, so I’ll call you back in five minutes.
  12. The manager is at / in a meeting, so please wait outside.
  • Share
  • Post
  • Post
  • Reddit
  • Email
  • WhatsApp
NEW: Try Matches, our daily vocabulary challenge. Pick a topic and level and match words with definitions to boost your vocabulary.
2,485,429 
761,532 
Improve Your Grammar
  • Download 2026 Grammar Guide (PDF)
  • Free Weekly Exercises & Vocabulary
  • Join over 3 Million English Learners
We respect your privacy. Unsubscribe anytime.

Grammar Checker

GrammarCheck.net - Try online
Hint → Bookmark GrammarCheck for future use.

Latest Posts

  • Why “try and” is not a mistake July 11, 2026
  • 100 Words Every Digital Marketer Should Know July 11, 2026
  • 100 Best Synonyms for “Highly” July 11, 2026
  • 100 Best Synonyms for “Timeline” July 11, 2026
  • 100 Words Every House Sitter Should Know July 11, 2026
  • 100 Best Synonyms for “Awesome” July 11, 2026
  • 100 Words to Describe Sadness July 11, 2026

Copyright © 2026 · EnglishGrammar.org
Disclaimer · Pro · Privacy Policy · Refund Policy · Sitemap · Terms

Improve Your Grammar
  • Download 2026 Grammar Guide (PDF)
  • Free Weekly Exercises & Vocabulary
  • Join over 3 Million English Learners
We respect your privacy. Unsubscribe anytime.