從所給的A、B、C、D四個選項中,選出可以填入空白處的最佳選項,并在答題卡上將該項填涂黑。
21. ---How long are you staying?
---I don’t know. ________.
A. Everything is OK B. Never mind
C. It depends D. It doesn’t matter
22.In memory of China’s Youth’s Day, ____________ celebration evening took place on our campus. It was ___________ success.
A.a(chǎn); a B.the; the C. a; / D.the; a