Mustn't / Don't have to

Level:

Intermediate

Category:

Grammar Exercises

Group:

Modals

Please select the correct answer for each of the below questions:

 
 

1 - It's very infomal here. You ______ wear a tie unless you want to.

a - doesn't have to
b - must not
c - don't have to
 

2 - You ______ ask my permission. You can do what you want.

a - don't have to
b - doesn't have to
c - must not
 

3 - He's a millionaire. He ______ work but he does because he enjoys it.

a - don't have to
b - doesn't have to
c - must not
 

4 - The train is direct. You ______ change trains.

a - don't have to
b - doesn't have to
c - must not
 

5 - I like Saturdays because I ______ go to work.

a - don't have to
b - doesn't have to
c - must not
 
 

6 - Be on time. You ______ be late or we will leave without you.

a - must not
b - don't have to
c - doesn't have to
 

7 - It is forbidden. You ______ do that.

a - don't have to
b - doesn't have to
c - must not
 

8 - It's optional. We ______ to go if you don't want to.

a - don't have to
b - doesn't have to
c - must not
 

9 - Whatever you do, you ______ click with the right mouse button or the program will crash.

a - must not
b - don't have to
c - doesn't have to
 

10 - I'll tell you a secret. You ______ tell anybody else. Promise?

a - doesn't have to
b - must not
c - don't have to
 

11 - In athletics, you ______ start before the gun is fired.

a - doesn't have to
b - must not
c - don't have to
 

12 - In boxing, you ______ hit your opponent below the belt.

a - don't have to
b - doesn't have to
c - must not
 

13 - You ______ park here. There is a double yellow line.

a - doesn't have to
b - must not
c - don't have to
 

14 - You ______ speak to the driver when the bus is moving. It's dangerous.

a - doesn't have to
b - must not
c - don't have to
 

15 - This is very important. You ______ forget what I said.

a - doesn't have to
b - must not
c - don't have to
 

16 - You ______ be mad to work here but it helps.

a - doesn't have to
b - must not
c - don't have to
 

17 - I ______ wear a suit at work on Fridays. It's 'dressing down day".

a - doesn't have to
b - must not
c - don't have to
 

18 - Pay me back when you can. You ______ do it immediately.

a - must not
b - don't have to
c - doesn't have to
 

19 - In bridge, you ______ look at other people's cards.

a - doesn't have to
b - must not
c - don't have to
 

20 - Help yourself to anything you want. You ______ ask.

a - must not
b - don't have to
c - doesn't have to
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