Question

The haze or smog was so serious that the winter running _________.Some students complained as they ran

A．could have cancelled	B．should have cancelled
C．must have been cancelled	D．ought to have been cancelled

Answer 1

D

試題分析：考查情態動詞。根據句意可知本題表示“本應當……”，故用should have done或ought to have done。再根據主語the winter running與動詞cancel之間為被動關系。句意：霧霾是如此的嚴重，所以冬季跑步本應當被取消，一些學生在跑步時抱怨。故D正確。