We must set about _____ our lesson for the mid-term examination.
| A．reviewing | B．reviewed | C．to review | D．to reviewing |
—Shall I help you with the washing up?
—．I'll do it later．
| A．Of course | B．Don't bother |
| C．That would be nice | D．With pleasure |
––What a journey! We’ve finally arrived!
––_____ an out-of-date train schedule, we would not have missed the train.
| A．Had we not used | B．Did we use |
| C．If we didn’t use | D．If we had used |
It was probably at that moment _____ I understood what kindness really was.
| A．that | B．when | C．which | D．what |
She _____ with the symphony orchestra three times this season.
| A．played | B．has played | C．has been playing | D．is playing |
It was very kind of you to do the washing-up, but you _____ it.
| A．needn’t do | B．shouldn’t do |
| C．mustn’t have done | D．needn’t have done |