题目内容
The manager was worried about the press conference his assistant________ in his place but, luckily, everything was going on smoothly.
A. gave
B. gives
C. was giving
D. had given
C
解析:根据was worried about和was going on可知新闻发布会当时正在进行,需用过去进行时。句意:经理担心助手代替他举行的新闻发布会,但幸好一切正进展地很顺利。故选C项。
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