Question

I got a piece of mail yesterday which I ________ for over two weeks.

1. A.
   was expecting
2. B.
   had been expecting
3. C.
   have expected
4. D.
   had expected it

Answer 1

B
主句用了一般过去时，定语从句的动作发生在主句动作之前，用过去完成进行时表示这一动作一直持续到主句的动作。