Question

(2013·青岛一模)All flights ________ owing to the heavy fog, many passengers could do nothing but take trains.

A．to be cancelled B．were cancelled

C．have been cancelled D．having been cancelled

 

Answer 1

D

【解析】选D　考查独立主格结构。逗号前后两部分之间没有连词，因而前半部分不可能是句子，排除B、C两项。此处只能用独立主格结构，动词不定式在此结构中表示将来，故排除A项。现在分词的完成被动式表示被动、完成，故选D项。