高中语法动词的时态和语态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选c,为什么不选d?如何翻译?

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高中语法动词的时态和语态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选c,为什么不选d?如何翻译?
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高中语法动词的时态和语态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选c,为什么不选d?如何翻译?
高中语法动词的时态和语态
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
选c,为什么不选d?如何翻译?

高中语法动词的时态和语态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选c,为什么不选d?如何翻译?
过去完成时态,表示过去的过去,在这里是先担心,而空中动作不是发生在主句谓语之前,所以不用D

经理担心他的助理放弃他在新闻发布会的职责，但是幸运的是，一切进行地很顺利。

经理担心他的助理替他进行的新闻发布会，但是幸运的是，一切进行地很顺利。
我认为用C.表示担心正发生的事。

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