-What time do you usually go to bed?
-I usually go to bed____eight o'clock．
| A．in |
| B．on |
| C．at |
| D．／ |
—What do you think of tomorrow’s football match?
—_____difficult for us_____ the match.
| A．We’re, to win | B． We’re, winning | C．It’s, to win | D．It’s, winning |
You look quite tired. You’d better _____a good rest.
| A．stop to have | B．stop having | C．to stop to have | D．to stop having |
—How long have you _____the novel?
—Three days.
| A．kept | B．borrow | C．been | D．bought |
—Listen！Helen is singing in the next room.
—It _____be Helen .She has gone to Beijing.
| A．should | B．mustn’t | C．may | D．can’t |
Some people won’t realize the importance of their health _____they have lost it.
| A．after | B．when | C．until | D．as |