Some students often listen to music ___ ___ classes to refresh themselves.

A. between                   B. among                  C. over                         D. during

 Whatever others say, I find what I am doing _______.

A. worthwhile             B. worth                      C. worthy of               D. a worth

一 Where have you been?

一 I got caught in traffic; otherwise I _____ here sooner.

A. would be　　 　　　 B. have been 　　　　　　 C. had been　　 　　　　 D. would have been

 The crowd ______ silent on his arrival.

A. kept                              B. sound                       C. remain                            D. fell

 He tried to deal with the ever-increasing burden of his work, but finally ______ and had to take a complete rest.

A. broke down            B. broke up                C. broke away            D. broke out

一Oh，my goodness! I can’t find my mobile phone. Someone might have stolen it.

一But how _________ a thief have entered the house with all the doors and windows still locked ?

A. should 　 　　　　　　 B. dared　　 　　　　　　 C. must　 　　　　　　　　　 D. could

 You are old enough to _________ what you have done, so be careful with your behavior.

A. responds to              B. answer for                      D. answer to                D. reply to

If only I could buy a new CD but I ________ enough money.

A. do not have B. did not have C. will not have D. had not had

With everyone ________, the team can’t go on with the project.

A. wearing out B. wears out C. to wear out D. worn out

 Babies are not born with _______moral sense; they can’t tell _________ difference between right and wrong. 

A. the; the                    B. a; a                          C. a; the                       D./;/