when( ) the question,the boy looked puzzled and made no answer.A ask B asked C asking D to ask

问题描述:

when( ) the question,the boy looked puzzled and made no answer.
A ask B asked C asking D to ask

B
当被问问题时,那个男孩看起来很困惑并且常常回到不上来

B asked when asked the question是省略句,asked是被动语态,原句可认为是when the boy was asked the question,he looked puzzled and made no answer.当这个男孩被问到问题时,他总是一头雾水、茫然不答....