1 . Johnny, you ________ play with the knife, you ________ hurt yourself.

A．won’t; can’t

B．shouldn’t; must

C．mustn’t; may

D．can’t, wouldn’t

2 . Life is unpredictable; even the richest ______ become the poorest.

A．shall

B．must

C．need

D．might

3 . I can’t find my purse. I ________ it in the supermarket yesterday, but I’m not sure.

A．should have left

B．must have left

C．might have left

D．can have left

4 . Although this ________ sound like a simple task, great care is needed.

A．may

B．must

C．need

D．should

5 . He plays basketball very well. He_________ it a lot.

A．may practise	B．must practise
C．must have practised	D．should have practiced

6 . I____________ go to a summer camp during the summer vacation, but I am not sure.

A．might

B．can

C．must

D．need

7 . When are you going to return my novel? Don’t worry. You ____ have your book soon, I promise.

A．shall

B．should

C．may

D．must

8 . Who is knocking at the door? ________ it be your guest?

A．Can

B．Shall

C．May

D．Must

9 . You _____ be right but I’m going back to check anyway.

A．should

B．must

C．need

D．might

10 . You ______ feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful you did it.

A．may

B．can

C．should

D．would