Do you know how much time and effort they devoted such a complicated project?A. to complete B. completedC. completing D. to completing 题目和参考答案——青夏教育精英家教网—

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8. Do you know how much time and effort they devoted such a complicated project?

A. to complete B. completed

C. completing D. to completing

8. D考查非谓语动词。句意：你知道为完成如此复杂的工程他们付出了多少时间和精力吗？此处考查短语devote-to，to是介词，后接动名词。

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