Not until he came back home his schoolbag had been left on the school bus.A. did he findB. he did fi

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【题目】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

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【答案】A

【解析】

考查部分倒装。句意：直到他回到家，他才发现他的书包落在了校车上。含有否定意义的词位于句首时，句子应用部分倒装，将助动词提前，根据上文came可知为一般过去时，故选A。