He said it was impossible for______ a mistake in a computer’ s calculation, so you can rely on that.

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问题 He said it was impossible for______  a mistake in a computer’ s calculation, so you can rely on that.

选项 A、there being
B、there would be
C、there to be
D、there was

答案C

解析 there be句型若出现在for后面,用不定式,若出现在其他介词后面,则用there being。本句中,“there to be+名词词组”作宾语从句中的主语,相当于:...for there to be a mistake in a computer’s calculation was impossible...。
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