第一节单项填空(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涂黑.
例: We last night, but we went to the concert
instead,
A. must have
studied
B. might study
C. should have
studied
D. would study
21. If you __ go, at least wait until the storm
is over.
A. can
B. may
C. must
D. will