22、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

21、I really can't understand ______ her like that．

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

20、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

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

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

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

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

17、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

16、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

15、Plastic bags are provided for our convenience but they have also_______ the pollution of the environment．

A．adapted to      B．turned to       C．contributed to         D．looked forwarded to

14、---Where were you when I called at your house this morning?

---Oh, I_____ for a friend from Tokyo at the airport．

A．had waited          B．am waiting         C．have waited       D．was waiting

13、---How can I apply for an online course?

---Just fill out this form and we______ what we can do for you．

A．see         B．are seeing           C．have seen        D．will see