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Several weeks had gone by I realized the painting was missing. A. as B. before C

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Several weeks had gone by I realized the painting was missing. A. as B. before C

Severalweeks had gone by  I realized the painting was missing.

A.as B.before  C.since   D.when

 

试题答案

答案:B

提示:

…hadgone by before +sb. +did…“时间在不知不觉中过……(已过去了)”。