【題目】Not until he came back home ______ his schoolbag had been left on the school bus.

A. did he findB. he did find

C. he foundD. found he

【答案】A

【解析】

考查部分倒裝。句意：直到他回到家，他才發(fā)現(xiàn)他的書包落在了校車上。含有否定意義的詞位于句首時，句子應用部分倒裝，將助動詞提前，根據(jù)上文came可知為一般過去時，故選A。

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