第二部分：英语知识运用(共两节，满分35分)
第一节：语法和词汇知识(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涂黑。
21．We were hoping for a full team today but only five players ．
A．turned up B．turned on C．turned down D．turned in
22．I didn’t hear the bell ring．I asleep．
A．must be B．must have been C．should be D．should have been
