When I went to their house, there was no light on. They _____ at home.
| A．can’t be | B．couldn’t be |
| C．can’t have been | D．mustn’t have been |
Susan started to clean the room； Lily was preparing lunch．
| A．however | B．but | C．meanwhile | D．when |
—Don’t be disappointed．Have another go，Ok?
— .
| A．With pleasure | B．It’s my pleasure |
| C．That’s all | D．Good idea |
—How can I get to Guangzhou within five hours?
—There is no way by air．
| A．rather than | B．other than | C．more than | D．less than |
The mother felt very happy her daughter’s success．
| A．at | B．of | C．on | D．in |
—Wasn’t it Dr．Wang who spoke to you just now?
—．
| A．I didn’t know he was | B．Yes，it was |
| C．No，he wasn’t | D．Yes，he did |