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By the time Jane gets home, her aunt ______ for London to attend a meeting.

A. will leave    B. leaves       C. will have left       D. left

C


解析:

by短語(yǔ)常與完成時(shí)連用,這里面的gets home是用現(xiàn)在表將亞,實(shí)際上是指明一個(gè)將亞的時(shí)間,不失為主句用將亞完成時(shí)。意思是:到j(luò)ane到農(nóng)的時(shí)候,她的姑姑已經(jīng)離開(kāi)家去倫敦參加一個(gè)會(huì)議了。

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