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he was laid off last year how serious the economic crisis was.A.Not until-he rea

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he was laid off last year how serious the economic crisis was.A.Not until-he rea

_______he was laid off last year ______ how serious the economic crisis was.

A.Not until…he realized

B.It was not until… when he realized

C.It is not until…that did he realize

D.It was not until …that he realized

试题答案

B