Fill in with the correct form of mustn039;t, don039;t need to/don039;t

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 its 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.
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