问题

Zhengzhou was attacked by such a terrible sandstorm________ few residents had ever experienced before

A:which
B:as
C:where
D:that

正确答案是：

同类题型

To learn English well, we should find opportunities to hear English____ as much as we can [ ]

He forgot my birthday, didn’t he–.He wanted to give you a big surprise.

The rest of the novel very interesting.　　

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The Great Wall of China is _______ wall in the world.