问题

______ a phone is of great help, I don’t think it’s a good idea to spend too much time on it.

A:If
B:While
C:Because
D:As

正确答案是：

同类题型

The thief was about to leave the room when the police ______ and caught him.

“You are ___!” he cried to me.

y after suffering from a massive earthquake and to ruins, the city took on a new look.

The film which _______ the book by Jack London is well worth seeing.

was deeply impressed with the man’s willingness ______.