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It was ______ the chief engineer came ______ we began the experiment.

发布日期:2021-05-19

It was ______ the chief engineer came ______ we be...
A

not until; that

B

not until; then

C

until; that

D

until; when

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此试题出现在

全国大学生英语竞赛(NECCS)

系列之二:B类

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