Question

I________to Beijing before．

1. A.
   was never
2. B.
   had never been
3. C.
   have never been
4. D.
   am never

Answer 1

C
分析：单独的before是“以前”的意思，常常用作完成时或一般过去时的时间状语。此处要用现在完成时，因为空格后有介词to，have been to Beijing(去过北京)，have never been to Beijirig(从未去过北京)