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

试题分析：考查情态动词。根据句意可知本题表示“本应当……”，故用should have done或ought to have done。再根据主语the winter running与动词cancel之间为被动关系。句意：雾霾是如此的严重，所以冬季跑步本应当被取消，一些学生在跑步时抱怨。故D正确。