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The research is so designed that once _____ nothing can be done to change it.?

A. begins B. having begun C. beginning D. begun

Two dollars ________ all I need for the dictionary.

A. is　　　　 B. are　　　　 C. was　　　 D. were

Please ______ the traffic regulations.

A．observe　　 B．take 　C．see　　 D．look

You’d better ______ in the room.

A. not to smoke　　　　　 B. not smoke

C. don’t smoke　　　　　 D. not smoking

The final examination is coming up soon.It’s time for us to　　　　　　 our studies.?

A.get down to　　　 B.get out?　　　　　　 C.get back for　　　　　 D.get over

—What about　　　　 shirt she bought for her father?

—It’s wonderful as 　　　 birthday present.

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

Of all the books on the desk, ________ is of any use for our safety.

A. nothing　　　　 B. no one　　 C. neither　　　 D. none

____ he has been chosen to work as a teacher in the mountain village ____ him feel very proud.

　 A. That, make 　 B. Whether, makes

　 C. That, makes 　 D. Where, make

Raining hard, _____?

A. doesn’t 　 B. does it　　 C. is it 　 D. isn’t it

— Why did she spend so much time searching shop after shop only for a blouse?

— Oh, she was very _______about her clothes.

A. special     B. particular     C. especial     D. unusual