You late for yesterday’s class meeting as it was so important.A. couldn’tB. shouldn’t b

问题补充：

You late for yesterday’s class meeting, as it was so important.

A. couldn’t

B. shouldn’t be

C. mustn’t have been

D. oughtn’t to have been

答案：

A. couldn’t

B. shouldn’t be

C. mustn’t have been

(答案→)D. oughtn’t to have been

解析：考查情态动词。oughtn’t to have done = shouldn’t have done本不应当做。句意：你昨天班会本应当迟到，因为它很重要。