A. visiting his daughter
B. to visit his daughter
C. visit his daughter
D. visited his daughter
22. Are you serious in ____ such a view？
A. putting on
B. putting off
C. putting up
D. putting forward
23. The plane crashed，its bombs ____ as it hit the ground.
A. exploded
B. were exploded
C. exploding
D. were exploding
24. You should be content what you have.
A. to
B. about
C. with
D. for
25. “Do you like to ride on the old bus to school？” Yes，I prefer it _____.
A. to walk
B. to walking
C. walking
D. having walked
26. My vacation begins next Tuesday，____ I will leave for Florida.
A. which
B. that
C. while
D. when
27. Can you tell me ____ about the city that makes people love it so much？
A. it is what
B. what it is
C. what is it
D. is it what
28. Though he is very intelligent，he is ____ rather modest.
A. hence
B. otherwise
C. nevertheless
D. therefore
29. Lack of imagination is an obstacle ____ one's advancement.
A. to
B. of
C. for
D. about
30. If you can provide the wine，I'll ____ the food.
A. see to
B. look at
C. ask for
D. think about
参考答案：
21.D 22.D 23.C 24.C 25.B 26.D 27.B 28.C 29.A 30.A
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