40.A may not　　 B will not　　　　 C shall not　　 D could not

39.A protecting　 B saving　　　　 Cpolluting　　 D fighting

38.A crowded　　 Bsmall　　　　　 C dirty　　　　 D busy

37.A common　　 B the same　　　　 C changeable　 D different

36.A beautiful　　 B unlimited　　　 C rare　　　　 D valuable

34.　　　 　are that he has lost the money.

A Things　　　 B Times　　　 C　 Chances　　 D Cases

33.　　　 , he managed to finish it in time.

A The job was hard　　　　 B Hard as was the job

C Hard as the job was　　 D Hard　 was　 the job

32.　　　 　he does his work, I don't mind what time he arrives at the office.

A so far as　　 B as long as　 C as far as　 D so as

31.　　　 　I can do as well.

A However do you can do　　 B Whatever you can do

C Whichever you can do　　 D Whatever can you do