Mr. Green _______ his lessons when I went into his office.
| A．prepares | B．prepared |
| C．is preparing | D．was preparing |
―________ will you take the entrance examination?
― In twelve days.
| A．How often | B．How soon |
| C．How long | D．How far |
―I’m sorry I’m late.
―_________. Come earlier next time.
| A．My pleasure | B．No problem |
| C．It doesn’t matter | D．All right |
________ painting it is! This is probably the ugliest one I’ve ever seen.
| A．How terrible | B．How good |
| C．What a terrible | D．What a good |
―Congratulations, Jane, you have won the first prize in the physics competition.
―Thank you, Mr Green. I can’t make such great __________ without your help.
| A．experience | B．experiment |
| C．progress | D．operation |
The water in the river nearby will be dirtier than before if nothing __________.
| A．has done | B．will be done |
| C．is done | D．was done |