21、 Parents must        the idea that “I love you always，but sometimes I do not love your behavior.”

A. get along       B. get around                      C. get through              D. get across

20、Experts warn that global warming will cause dramatic climate changes including more       floods, heat waves and droughts.

A. usual                        B. ordinary                   C. frequent                   D. common

19、This kind of book ______ very useful but books of that kind ______ useless.

A. is ; is          B. is ; are             C. are ; is            D. are ; are

18、You can come to the dance ______ you dress.

A. whatever       B. whichever             C. however                D. whenever

17、Look at the floor, Tom !  _______ you watch TV while having a meal?

A. Must           B. Could                 C. Would              D. Should

16、There were dirty marks on her trousers ______ she had wiped her hands.

A. where            B. which                   C. when                    D. that

15、The psychological consultation centers have seen a sharp rise in the number of students looking for help, most ______ they were confused and depressed.

A. said                       B. to say                    C. say                   D. saying

14、        with so much trouble made us unable to accomplish the task on time.

A. Faced         B. Being faced                    C. Facing                     D. To face

13、---＄1,300, but that’s my last offer.

--- OK. It’s a ______.

A. cost                  B. price                      C. reward                          D. deal

12、 --- Did you attend Tom’s birthday party at the Grand Hotel?

--- I wish I ______. I _____ an English lecture in the school hall.

A. have; gave       B. did; have given        C. do; had given          D. had; was giving