Question

1. Sofia looked around at all the faces: she had the impression that she   most of the guests before.

A. has seen     B. had seen

C. saw         D. would see

Answer 1

1.    B考查动词的时态和语态。句意：索菲亚看了看周围所有的面孔，她印象中大部分客人她以前都是见过的。根据句意可知，此处see的动作发生在过去的过去，同时由before可知，该空应该用过去完成时态，故选B项。