6．His injury forced him to ______ the competition.

　　 A． drop out　 　　　　 B． drop out of　 　　 C．drop in　 　　　　　　 D． drop in on

4．Green products are becoming more and more popular because they are environmentally_______.　 [06 福建卷]

　　 A． friendly　　　 　 B． various　　　 C．common　　　　 D． changeable 5．When I passed the entrance examination, my family ______ me ______ my sucesses.

　　 A．celebrated; on　 　　　　　　　　　　　　　　　　 B．congratulated; on

　　 C． celebrated; to　 　　　　　　　　　　　　　　　　 D．congratulated; to

3．He was afraid he would have to ______ invitation to the party.

　　 A．ignore　 　　　　　　 B． decline　 　　　　　 C．decrease　 　　　　　 D． deny

2．The disguise was so good that I had no ______ of his real identity.

　　 A．wonder　 　　　　　 B． hesitation　 　　　 C．suspicion　 　　　　 D．thought

1．What ____　 __ of students pass the CET4 college?

　　 A．percent 　　　　　　 B．percentage　 　　　 C． division　 　　　　 D． category

10．It must be e___　　 __ to all of you that he has made a mistake.

9．Where can I o____　　 __ a copy of her latest book?

8．There is a growing ____　　 __(趋势) for people to work at home instead of in offices.

7．The public remain ___　　 ___(怀疑的) of these claims.

6．Education is ____　　 __(义务的) for all children in Britain between the ages of sand 16.