25、When you play football, what ______ do you play?

   A. situation         B. place            C. part                D. position

24、When you play football, what ______ do you play?

   A. situation         B. place            C. part                D. position

23、---Why weren’t you at the meeting?

---I ______ for a long-distance call from my father in Australia.

   A. waited            B. was waiting     C. had waited          D. have been waiting

22、The highway ______ to the city is under repair now.

   A. leads             B. led             C. to lead              D. leading

21、― Doesn't this bus go to the park?
― ________.
  A. Yes, we do                  B. No, this is as far as we go
  C. You're welcome        D. I 'm very sorry

20、If you have any comments or suggestions, please let us know―we always appreciate _____ feedback from friends.

    A. having received        B. to receive       C. receiving   D. to have received

19、----You seem to have known Dr. Brown for a long time.

----That’s true. _____ he joined our club five years ago.

    A. Since         B. Until           C. When            D. If

18、Human behavior is mostly a product of learning, ______ the behavior of animal depends mainly on instinct(本能).

A. whereas        B. so              C. unless            D. that

17、A plane named Airbus A320 crashed in Sao Paulo on July 17, 2007, ________ more than 200 people lost their lives.

       A．for which B．because which      C．among which   D．as a result of which

16、More than one student, along with some parents, ______ quizzed for information on the reference book so far.

A. was             B. were                  C. have been          D. has been