— Did Mary come to the party?

— I don't know．She ________ while I was out．

A．may have come

B．must have come

C．might come

D．could come

All I can say is,go there,go now,apologize on your knees．Ask what you ________ possibly do to make up for it．

A．could

B．will

C．must

D．should

You ________ not leave your post．or you will be punished．

A．may

B．shall

C．will

D．need

Without electricity,what ________?

A．will the world be like

B．would the world be like

C．the world will be like

D．the world be like

Alice said she was really busy this week,but I think she ________ show up at the party if she doesn't have to work overtime on Friday．

A．might

B．would

C．must

D．shall

— ________ you make so much noise?The baby is sleeping．

— Terribly sorry,never again．

A．Must

B．Can

C．May

D．Need

My face ________ paleimmediately I walked into the room,for the first man I met asked me．“Are you feeling all right”?

A．must be

B．could have been

C．must have been

D．had to be

How ________ you say that you really understand the whole story if you have covered only part of the article?

A．can

B．must

C．need

D．may

A left-luggage office is a place where bage ________ be left at a railway station．

A．should

B．can

C．must

D．will

— Excuse me,but I want to use your computer to type a report．

— You ________ have any computer if you don't take care of it．

A．shan't

B．might not

C．must

D．shouldn't