It was necessary to _____ the factory building as the company was doing more and more business.
| A．extend | B．increase | C．lengthen | D．magnify |
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 |
---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 |
The poor boy the test again; in that case, his mother will be very disappointed.
| A．must have failed | B．might fail | C．could have failed | D．should fail |