I didn't see you at the meeting yesterday.Why? -I __for a long distance call then from my daughter

问题描述:

I didn't see you at the meeting yesterday.Why? -I __for a long distance call then from my daughter
in Canada.A.waited B.have waited C.was waiting D.will wait

C.was waiting
昨天的会上没看见你.为什么?
当时我正在等我女儿的长途电话.