Oh, what a pity! It ____ so easy for me to bring those photographs I wanted to show you, but I ____ them at home．
| A．would have been, have left | B．would have been, had left |
| C．had been, left | D．was, left |
—Hi, Mary! Do you know where Jim is?
— I think he ________ a lecture in the library.
| A．will deliver | B．is delivering |
| C．has delivered | D．delivered |
— Are you sure you won’t come for a drink with us?
—_____, if you insist.
| A．All right then | B．It depends |
| C．Not at all | D．I don’t care |
They must have been enjoying themselves there, or they _____ so long.
| A．can’t have stayed | B．wouldn’t have stayed |
| C．needn’t have stayed | D．couldn’t stay |
_____ and you will break the world record.
| A．If you make more efforts | B．Making more efforts |
| C．More efforts | D．When making more efforts |
— Where did you live as a child?
—— A village _____ by hills on three sides.
| A．surrounded | B．surrounding |
| C．was surrounded | D．to be surrounded |