从A、B、C、D四个选项中, 选出可以填入空白处的最佳选项, 并在答题卡上将该项涂黑。
例：It is generally considered unwise to give a child _________ he or she wants.
A. however B. whatever C. whichever D. whenever
答案是B。
21. Lily asked ________second question before Maria could answer_______first one.
A. the; the B. a; a C. a; the D. the; a
22. I was watching the news on TV _______ the power went off.
A. when B. as C. while D. until
23. If Tom keeps practicing, he_______to make a famous singer.
A. wants B. hopes C. promises D. wishes
24. —Are you in a hurry?
—No, in fact I’ve got plenty of time. I_______wait.
A. must B. can C. need D. should
25. This is the new type of plane________ parts are made in China.
