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Reading: Modal verbs of deduction: Must, might, could, can’t
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B1 Grammar lessons and exercises

Modal verbs of deduction: Must, might, could, can’t

English Test Online
Last updated: April 13, 2026 11:41 am
English Test Online

Exercise 1

Select the right modal verbs of deduction for each space below. There are TWO possible correct answers in some sentences.

Exercises & Summary
  1. Modal Verbs of Deduction: Must, Might, Could, Can’t Exercises
  2. Exercise 1
  3. Exercise 2
  4. Exercise 3

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1️⃣Sarah hasn’t answered her phone all day. She ______ at work.
2️⃣ The lights are off and the door is locked. They ______ home.

3️⃣ I’m not sure where Tom is. He ______ at the gym.

4️⃣ She studied all night for the exam. She ______ very tired now.

5️⃣ That man looks very familiar. I ______ him from somewhere.

6️⃣ She just got a promotion and a pay rise. She ______ very happy.

7️⃣He isn’t answering his messages. He ______ sleeping.

8️⃣ Anna always arrives on time. She ______ late today.

9️⃣ I’m not sure, but that noise ______ the wind.

1️⃣0️⃣ He has been training every day for months. He ______ ready for the competition.

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