It'llbealongtime________Mr.Black

发布时间：2020-07-12 04:51:31

It'll be a long time ________ Mr. Black ________ back from abroad.












A.before; es











B.since; has e










C.before; will e










D.after; will e

网友回答

A解析解题思路：It'll be a long time before…句型中before引导的时间状语从句用一般现在时表一般将来时．
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