The project alongside with the experiment we had once devoted so much time perfectly.A．to work out B．to working out C．to worked out D．has worked out 题目和参考答案——青夏教育精英家教网—

题目内容

The project alongside with the experiment we had once devoted so much time ______ perfectly.

A．to work out B．to working out

C．to worked out D．has worked out

【解析】

试题分析：本题中含有一个定语从句we had once devoted so much time to，这个定语从句修饰先行词the experiment，定语从句中有一个固定搭配devote some time to…花时间在…之上；横线首先要填to，然后再接谓语动词work out。另外定语从句中使用了过去完成时had devoted，说明后面主句使用的是过去的时态。句义：这项工程和我们已经花了很多时间做的实验结果非常完美。故C正确。

考点：考察句子结构和时态

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