Question

1.-rewrite the sentences using the words given
a) you are not allowed to talk during the test (mustn't)
b) It isn't necessary to bring food (don't have to)
c) I'm obliged to finish this letter before midday (have to)
d) You are not allowed to leave the classroom without permission(mustn't)

Answer 1

a) You mustn’t talk during the test
b)You don’t have to bring food
c)I have to finish this letter before midday
d)You mustn’t leace the classroom without permissions