We still have many problems ________ before we can produce a

We still have many problems ________ before we can produce atomic car .A overcoming
B having overcome C to overcome D overcome
但我觉得选D 也可以过去分词作宾补表示宾语problem在逻辑关系上的被动

rqipijfkcq 1年前已收到1个回答举报

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答案应当选C.
have sth.to do 与 have sth.done均表示有某事要做；但二者之间也存在着细微的差别：前者动词不定式表示将要发生的事情,而使用过去分词形式则含有已经完成的意思在里面.
从这一方面来考虑,选项C是更好的回答.

1年前

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