19、The trainer was sure the dolphin was strong enough, so he _______ it into the sea.

A. transported    B. unloaded      C. transmitted    D. released

18、A number of suggestions were collected after the meeting, including the one that residents_________ pets in apartment buildings.

A. wouldn’t raise   B. didn’t raise     C. shouldn’t raise   D. couldn’t raise

17、---- Shall I _________ some music?

---- You’d better not. I’m ______ on my lessons.

A. put on…bent    B. put up…bending   C. put in…bent   D. put out…bending

16、-----Has the composer finished her new symphony yet?

-----I have no idea. She _______ it last week.

A. wrote      B. had written     C. would write      D. was writing

15、Color-blinded people can’t make a _______ between red and green.

A. distinction     B. difference      C. discovery     D. division

14、It was for this reason __________ Tim gave up his well-paid job and moved out of the city to settle down in the country . 

A. which         B. why         C. that          D. how

13、----- Doesn’t the break seem a bit too long?

----- I think so. But, listen! There________ the bell!  

A. goes          B. going        C. is going       D. has gone

12、----- How are you getting on with your work?

----- Oh, sorry. Things aren’t going so well as _______ .

A. being planed      B. planning      C. planned     D. to be planned

11、Although Joe enjoys a high status in the company, most of the time, he _______ wear sweaters, big trousers, and old shoes ______ business suits.

A. would prefer to…other than         B. prefers to…rather than

C. would rather…instead              D. preferred to…but

10、My grandma used to tell me stories of _________ bad habits lead to crimes when I was just a kid.

A. that         B. what             C. whether      D. how