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BytheyearshearrivesinLondon,scientistsprobably

練習題2.02W

問題詳情:

BytheyearshearrivesinLondon,scientistsprobably

By the year she arrives in London, scientists probably ____ a cure for bird flue.     A. will be discovering   B. are discovering    C. will have discovered    D. have discovered

【回答】

C

知識點:將來完成時及其被動式

題型:選擇題

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