Why he did it wasn't quite clear.

Why he did it wasn't quite clear. ---he did that wasn't quite clear A that Bwhat c why The reason why he did it was not clear.这句话why引导的是什么从句 Nothing he did was right,_ A.did it B.wasn't it C.didn't it 新概念中的选择题：They were quite sure it wasn't. The question__(it)wasn't difficult.He I haven't hear it clear.I did't hear it clear,哪个对 when asked why he did it he made it quite clear that he preferred to study english中间为 It wasn't clear at that time _________ we met again so soon. It wasn't until quite late in life that I discovered how eas it wasn't until they had grown quite gray that their luck fi