Fill in with the correct form of mustn't, don't need to/don't have to.
1 We don't have to/don't need to be at school until 9 o'clock.
2 You ........................................... get stressed about the homework – it's easy.
3 You .................................................. eat too much junk food – it’s bad for your health. 4 She ............................................ change her diet – she always eats healthy food.
5 The children ................................................ watch too much TV – it's bad for their eyes.

Rewrite the sentences using might.
1 Perhaps she will lose weight with her new
diet.
She might lose weight with her new diet.
2 It is possible he'll feel better tomorrow.
..................................................................
3 There is a chance I'll get a good night's sleep.
..................................................................
4 I'm not sure if he will take up a hobby.
..................................................................
5 It's possible that they'll follow my advice.
..................................................................

2 don’t have to/ don’t need to

3 mustn’t

4 doesn’t have to

5 mustn’t

2 He might feel better tomorrow.

3 I might get a good night’s sleep.

4 He might take up a hobby.

5 They might follow my advice.