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. —Do you like cooking, Sally?
— . Luckily I’ve never had to worry about it.
A. Never mind B. Not really C. I don’t agree D. You said it
22. children believe they can succeed, they will never become totally independent.
A. If B. Though C. Unless D. When
23. We asked both Tonny and Jerry, but could offer any help.
A. either B. all C. none D. neither
