Question

We were deeply impressed by the schools and teachers________ we had visited there.

1. A.
   where
2. B.
   which
3. C.
   that
4. D.
   who

Answer 1

C

这题考查定语从句的用法：先行词是：the schools and teachers，当先行词有人有物时，应该用that引导定语从句。句意是：我们对在那里见到的学校和老师印象深刻。选C。