_____ these experiments were successfully completed would we think of going into humans.

A. If only                     B. Even if                    C. Only if                    D. So that

— The party will start at 7:00 sharp. Come earlier!

— _______. Thanks for your mention.

A. Good idea　　　　　　　　 B. I will　　　　　　　　　 C. I think so　　　　　　　　 D. You’re right

 They ______ so tired if they ______ for a whole day.        

A. wouldn’t feel, didn’t walk                      B. wouldn’t feel, weren’t walking

C. wouldn’t be feeling, weren’t walking           D. wouldn’t be feeling, hadn’t been walking

 — Are these seats available?

— Sorry, sir. The seats _____.

A. have reserved    B. are reserved             C. reserved                  D. are reserving

 _____ the instructions very carefully when filling in the form.

A. Following         B. To follow                 C. Follow                    D. Followed

 With economy developing at great speed, our city has _____ quite a few changes in recent years.

A. witnessed           B. accumulated             C. arisen                      D. introduced

 Being from a family _____ produced great actors, it’s no wonder that she quickly found her way into the spotlight.   

       A. who                       B. where                   C. what                     D. which

 Today’s college is appropriate as a setting for a society,______ its members must acquire and manage knowledge from a wide variety of sources．

A. which                      B. of which                 C. where                      D. so that

 After walking a whole day, I was almost________, not feeling bad, though.

   A. out of shape          B. out of breath       C. out of control      D. out of order

Along with graduation _____ to look for a job!

A. is the need come B. does the need come C. the need comes 　　 D. comes the need