Question

【题目】— I didn't see you at the meeting yesterday. Why?
— I _____ for an important telephone call at that moment.
A.wait
B.waited
C.am waiting
D.was waiting

Answer 1

【答案】D
【解析】句意：— 昨天开会的时候我没看见你。为什么？— 那时我正在等一个很重要的电话。根据句子中at that moment可知用过去进行时。故答案选D。