—How long do you think it will be________ China sends a manned spaceship to the moon?

   —Perhaps two or three years.

   A. when           B. until             C. that          D. before

 Green products are becoming more and more popular because they are environmentally________。

  A. friendly          B. various           C. common      D. changeable

 If it were not for the fact that she________ sing, I would invite her to the party.

  A. couldn’t          B. shouldn’t         C. can’t         D. might not

 She________ Japanese when she was in Japan. Now she can speak it freely.

  A. picked out        B. made out          C. made up      D. picked up

 I’m sure you’d rather she went to school by bus, ________?

  A. hadn’t you        B. wouldn’t you       C. aren’t I         D. didn’t she

 ________ homework did we have to do that we had no time to take a rest.

   A. So much         B. Too much         C. Too little        D. So little

 The moment the 28th Olympic Games________ open, the whole world cheered.

  A. declared                              B. have been declared

  C. have declared                          D. were declared

 The workers will go on strike if the demands they________ put forward are turned down.

  A. could           B. would             C.不填          D. had

 —It’s burning hot today, isn’t it?

   —Yes. ________ yesterday.

  A. So was it        B. So it was           C. So it is         D. So is it