1 . —_________ I have a word with you，Mr. Green?It won’t take long·
—Okay.

A．Should

B．May

C．Need

D．Must

2 . I got close enough to hear them speaking Chinese, and I said “Ni Hao” just as I ____ do in China.

A．must

B．might

C．can

D．should

3 . —Where will you start your work after graduation?
—Mmm, it’s not been decided yet. I ________ continue my study for a higher degree.

A．can

B．must

C．would

D．might