1 . —Must we hand in our reading report by the end of this week?
—No, you ______.

A．mustn’t

B．needn’t

C．can’t

D．shouldn’t

2 . —Mum, may I go to the concert with Tom tonight?
—No, you ________. Because it will be rainy.

A．needn’t

B．don’t have to

C．mustn’t

D．shouldn’t

3 . Life is unsure; even the poorest ________ become the richest.

A．shall

B．must

C．need

D．might

4 . It has been announced that all students ________ put on masks before going to school in case they are infected with novel coronavirus.

A．shall

B．will

C．need

D．may

5 . I’ve ordered some pizza, so we _______ worry about cooking when we get home tired.

A．can’t

B．dare not

C．needn’t

D．may not

6 . The biggest problem for most plants, which_______just get up and run away when threatened, is that animals like to eat them.

A．shan’t	B．can’t
C．needn’t	D．mustn’t