— Hi, Tracy, you look tired.
I am tired. I_______ the living- room all day.
| A．painted | B．had painted | C．have been painting | D．have painted |
—What sort of house do you want to have? Something big?
—Well， itbe big—that’s not important.
| A．mustn’t | B．needn’t | C．can’t | D．won’t |
You don’t have to know the name of the author to find a book.Youfind the book by the title.
| A．must | B．need | C．can | D．would |
What a pity! Considering his ability and experience， hebetter.
need have done B.must have done C.can have done D.might have done
Shehave left school， for her bike is still here.
| A．can’t | B．wouldn’t | C．shouldn’t | D．needn’t |
John promised his doctor henot smoke， and he has never smoked ever since.
| A．might | B．should | C．could | D．would |