Question

b Circle the correct form. Tick (V) if both are possible. We don't have to/mustn't go to school next week, It's the holiday
1 You don't have to / mustn't cross the road when the traffic lights are red.
2 What do I have to / must I do when I finish this exercise?
3 The concert is free. You don't have to / mustn't pay.
4 We're late for the meeting. We have to / must go now,
5 You don't have to / mustn't leave the door open - the dog will get out
6 I have to / must pay Jane back the money she lent me.
7 In Britain you have to / must drive on the left,
8 You don't have to / mustn't be tall to be good at football ​

Answer 1

1 mustn't

2 must

3 have to

4 must

5 mustn't

6must

7 have to

8 have to