Ⅱ.单项填空（共15小题；每小题1分，满分15分）
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的标号涂黑。
21. — How do you find _________ birthday party of the Smiths?
— I should say it was __________ complete failure．
A. a; a B. the; a C. a; / D. the; /
22. It may not be a great suggestion. But before ______one is put forward, we’ll make do with it.
A. a good B. a better C. the best D. a best
23.—What kind of dancing do you like?
—_______. If it's rock music I'll do disco, and if it's romantic music I'll do ballet.
A. It depends B. Not really C. That’s all right D. Never mind
24.—Alice is in hospital.
—Oh, really? I didn’t know, I _________go and visit her.
A. will B. would C. am going to D. could
25. He wrote a letter ______ he explained what had happened in the accident.
