I was giving a talk to a large group of people，the same talk I ___to half a dozen other groups before. 单选题 (10 分) 10分 A. was giving B. am giving C. had given

I was giving a talk to a large group of people，the same talk I ___to half a dozen other groups before.
单选题 (10 分) 10分
A.
was giving

B.
am giving

C.
had given

出自：国家开放大学人文英语4

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