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

A．Can

B．Shall

C．May

D．Must

2 . Every coin has two sides. Beautiful songs, sometimes, ________ just be noise to others.

A．must

B．should

C．may

D．would

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

A．should

B．must

C．need

D．might

4 . 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

5 . －Will you go travelling with me this summer?
－I'm not sure. I ________ have to take care of my grandma.

A．may	B．shall
C．need	D．must

6 . —Have you decided to take up teaching as a career after graduation?
—I ________ go abroad for further education instead, but it depends.

A．should	B．must
C．might	D．shall

7 . Since you are here already, you ________ as well stay here and enjoy yourself.

A．can	B．may
C．should	D．must

8 . —Excuse me. Is this the right way to the Summer Palace?
—Sorry, I am not sure, but it ____________ be.

A．might	B．need
C．must	D．should

9 . –– Do you think you can pass the exam?
–– En…I’m not sure. It _______ be possible if I work hard.

A．must	B．might
C．should	D．would

10 . ---Excuse me, is this the right way to the bank?
--- It __________be but I’m not sure.

A．will

B．must

C．might

D．shall