－Write to me when you get home．

－________．

A．I must

B．I should

C．I will

D．I can

My English-Chinese dictionary has disappeared．Who ________ have taken it?

A．should

B．must

C．could

D．would

According to a recent U．S．survey, children spent up to 25 hours a week ________ TV．

A．to watch

B．to watching

C．watching

D．watch

－Could I borrow your dictionary?

－Yes, of course you ________．

A．might

B．will

C．can

D．should

It's nearly seven o'clock．Jack ________ be here at any moment．

A．must

B．need

C．should

D．can

－There were 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

I often see lights in the empty room．Do you think I ________ report it to the police?

A．may

B．should

C．will

D．can

－I stayed at a hotel while in New York．

－Oh, did you?You ________ with Barbara．

A．could have stayed

B．could stay

C．would stay

D．must have stayed

Janny ________ have kept her word．I wonder why she changed her mind．

A．must

B．should

C．need

D．would

He ________ you more help, even though he was very busy．

A．might have given

B．might give

C．must have given

D．may give