. My father likes outdoor activities,_______ my mother prefers staying at home.
| A．when | B．while | C．after | D．before |
It is very kind of you to do the washing-up, but you __ it.
| A．mustn’t have done | B．wouldn’t have done |
| C．mightn’t have done | D．didn’t have to do |
.As is known to all,____ tiger is in____ danger of dying out.
| A．a; a | B．the; / | C．a; / | D．the; the |
---Let’s see if the basketball game has started yet.
---Started? It must be clear who _ by now.
| A．is winning | B．wins | C．has won | D．would win |
---Are you still going to Shanghai for the Spring Festival?
---Yes, but I really __ because I have a lot of things to deal with.
| A．can’t | B．mustn’t | C．won’t | D．shouldn’t |
---Look! The clouds are gathering.
---Yes. I’m afraid it __ be pouring down soon.
| A．can | B．must | C．should | D．might |