Question

【题目】______, the bus started at once.

A．The signal was given B．The signal giving

C．The signal given D．When the signal given

Answer 1

【答案】C

【解析】句意：给了信号后，汽车马上开始启动。根据前后两句主语不一致，没有连词，故判断前面的是独立主格结构，signal和give之间是被动关系，故选C项。