1 . Hiking trips ________ sound exciting to most kids, but few realize they ________ be uncomfortable and even dangerous.

A．would; should

B．must; should

C．may; can

D．can; will

2 . I guess this book ______ be Mary’s, but I’m not sure.

A．must

B．mustn’t

C．may

D．can

3 . We ______ eat too much roast food as it may do harm to our health.

A．wouldn’t

B．needn’t

C．had better not

D．might not

4 . Many adults report that even when out in nature, they ________ not take the time to admire a spectacular mountain ________ pulling out their smartphone to take a picture.

A．may … before	B．may … after
C．should … before	D．should … after

5 . — He is a very good tennis player; you __________ see him in action.
— Thanks for your advice.

A．are able to

B．ought to

C．mustn't

D．might not

6 . When it comes to death, Vincent Van Gogh ________ by others in that his wound didn’t indicate suicide, while Albert Einstein ________ longer but he refused surgery.

A．may have been killed; should have lived

B．should have been killed; should have lived

C．may have been killed; must have lived

D．should have been killed: must have lived

7 . Chris ________ go to the opera on Sunday because he is going to have a meeting.

A．can’t

B．might

C．mustn’t

D．should