－There are already five people in the car, but they managed to take me as well．

－It ________ a comfortable journey．

A．can't be

B．shouldn't be

C．mustn't have been

D．couldn't have been

Peter ________ come with us tonight, but he isn't very sure yet．

A．must

B．can

C．may

D．will

－I can't find my wallet．

－You ________ it on the bus．

A．must forget

B．must leave

C．must have forgot

D．must have left

－I promise that she ________ get a nice present on her birthday．

－Will it be a big surprise to her?

A．should

B．must

C．would

D．shall

A computer ________ think for itself, it must be told what to do．

A．can't

B．couldn't

C．may not

D．might not

Must we do it now?No, you ________．

A．won't

B．needn't

C．can't

D．don't

－Please don't make a noise．

－________．I'll be as quiet as a mouse．

A．Yes, I won't

B．No, I won't

C．No, I will

D．Yes, I will

－Do you think I could borrow your dictionary?

－________．

A．Yes, you may borrow

B．Yes, you could

C．Yes, help yourself

D．Yes, go on

－Could you please tell me how to get to the post office?

－________．

A．Yes, I could

B．No, I couldn't

C．Yes, I can

D．No, I don't

This pill will ________ you a good night's sleep．

A．help

B．make sure

C．ensure

D．give