Beijing was attacked by such a terrible sandstorm ______few citizens had ever experienced before. 

   A. and it was    B. as     C. that      D. which

Beijing was attacked by such a terrible sandstorm ______few citizens had ever experienced before. 

   A. and it was    B. as     C. that      D. which

Beijing was attacked by such a terrible sandstorm ______few citizens had ever experienced before.

1. A.
   and it was
2. B.
   as
3. C.
   that
4. D.
   which

Beijing was attacked by such a terrible sandstorm        few citizens had ever experienced before.

A．and it was        B．as     C．that   D．which

Beijing was attacked by such a terrible sandstorm ________ few citizens had ever experienced before.

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