Whenchanginglanes，adrivershouldusehisturningsignaltolet...

問題詳情：

When changing lanes，a driver should use his turning signal to let other drivers know________．

A．he is entering which lane  B．which lane he is entering

C．is he entering which lane  D．which lane is he entering   

【回答】

B

知識點：賓語從句

題型：選擇題