C. Choose the correct item.
11 You mustn't/don't have to use your phone in class.
12 Look at the clouds - it must/might rain later.
13 You must/have to take off your shoes before entering a
Japanese home.
14 These clothes are old. I might/need to buy new ones.
15 I'd love another piece of cake, but I mustn't/ don't need
to.
Marks:
5x1
5
D. Match the exchanges.

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