The students _____ busily when Miss Brown went to get a book she ____ in the office．

A．had written; left                                          B．were writing; has left

C．had written; had left                        D．were writing; had left

Bush, before Barack Obama, _______ Brown a similar gift, a leather bomber jacket．

A．gave        B．have given            C．would give           D．had given

The scientists predict that if present trends______, women in 400 years will be 2cm shorter and have healthier hearts．

A．will continue        B．continue         C．are continued         D．will be continued

Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale．

A．man has been         B．man is         C．has man been        D．will be man

I really can't understand ______ her like that．

A．you treat      B．you to treat         C．why treat              D．you treating

Kathy______ a lot of Spanish by playing with the native boys and girls．

A．picked up         B．took up           C．made up        D．turned up

The manager had fallen asleep where he ______, without undressing．

A．was laying           B．was lying           C．had laid           D．had lied

That was really a splendid evening．It’s years ______ I enjoyed myself so much．

A．when        B．that          C．before          D．since

I     along the street looking for a place to park when the accident________．

A．went; was occurring                                   B．went; occurred

C．was going; occurred                                          D．was going; had occurred

Tom sounds very much       in the job, but I’m not sure whether he can manage it．

A．interested       B．interesting          C．interestingly         D．interestedly