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Modal verbs: probability / deduction 1

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Choose the correct modal verb of deduction.

Paul is behaving in a very unusual way. I think he ______ again.

a)

can drink

b)

can be drinking

c)

might be drinking

2.

Choose the correct modal verb of deduction.


I think there ______ a mistake in your tax return. You should check it.

a)

can't be

b)

may be

c)

must be

3.

Choose the correct modal verb of deduction.

If Suzan said that, it ______ true. She never lies.

a)

might be

b)

must be

c)

can be

4.

Choose the correct modal verb of deduction.

Sorry, but I'm not Connor. You ______ me for someone else.

a)

might be confusing

b)

must confuse

c)

must be confusing

5.

Choose the correct modal verb of deduction.

I'm not sure I trust Peter. He ______ the person we think he is.

a)

might not be

b)

can't be

c)

must not be

6.

Choose the correct modal verb of deduction.

You have walked for ten hours. You ______ exhausted.

a)

can be

b)

can't be

c)

must be

7.

Choose the correct modal verb of deduction.


He ______ his son, they look completely different.

a)

might be

b)

can't be

c)

must not be

8.

Choose the correct modal verb of deduction.

There's a bit of traffic, so I ______ arrive in time.

a)

might not

b)

must not

c)

can't

9.

Choose the correct modal verb of deduction.

He ______ be very proud of you right now. You disappointed him.

a)

must not

b)

can't

c)

might

10.

Choose the correct modal verb of deduction.

I wouldn't swim in this river if I were you. It ______ dangerous.

a)

can be

b)

could be