Question

---He ______ to Beijing ten times in 1999．

---So he must have covered ______ of it．

1. A.
   went; much
2. B.
   had; a lot
3. C.
   was going; some
4. D.
   had gone; many

Answer 1

A
问句中有特定的过去时间，表示过去做过某事，因此用一般过去时；第二句表示“北京的很多地方”用much of+单数或不可数名词