问题补充:
I must be off now. My friends outside.
A. wait
B. have waited
C. are waiting
D. were waiting
答案:
A. wait
B. have waited
(答案→)C. are waiting
D. were waiting
解析:考查时态。根据上文的must be说明是对现在的情况进行说明,因为“must+动词原形”说明对现在的情况进行推测。故C正确。句意:我现在必须得走了,我的朋友在外面等我。
时间:2020-07-24 21:56:11
I must be off now. My friends outside.
A. wait
B. have waited
C. are waiting
D. were waiting
A. wait
B. have waited
(答案→)C. are waiting
D. were waiting
解析:考查时态。根据上文的must be说明是对现在的情况进行说明,因为“must+动词原形”说明对现在的情况进行推测。故C正确。句意:我现在必须得走了,我的朋友在外面等我。