注意：此页面搜索的是所有试题
题目内容
（人文英语4）
I was giving a talk to a large group of people，the same talk I ___to half a dozen other groups before.
选择一项：
A. had given
B. was giving
C. am giving
选择一项：
A. had given
B. was giving
C. am giving
参考答案
