1 . You__________be Mr Smith.I was told to pick you up. (用适当单词填空)

2 . —_______ you interrupt now? Can’t you see I’m on the phone?
—Sorry Sir, but it’s urgent.

A．Must

B．Can

C．Should

D．Could

3 . ---Must he come to sign this paper himself?
---Yes．He______ ．

A．need

B．must

C．may

D．will

4 . —— I can’t get through to the general manager’s office anyhow.
—— The line is busy. Someone _____ the telephone.

A．must use

B．uses

C．must have been using

D．must be using

5 . Why ____________ I drive so many miles away for a supper when I can easily have it at one of the restaurants nearby?

A．might

B．could

C．would

D．must

6 . ---May I smoke here?
--- If you ________, choose a seat near the window.

A．should

B．could

C．may

D．must