问题

The reason why she had a headache was _______ she had been reading for too long.

A:that
B:which
C:because
D:for

正确答案是：

同类题型

Is it my ______necessary to ave an wxperienced assistant.

下列词句中，加线成语使用正确的一项是（）

I’ll be back _______[ ]

How do you like the talk show—-I think it’s ,but some people think it’s so .

There is ________ food here . We don’ t need to buy any.