By the time the new pupil _ enough courage to raise his hand, the bell for the end of the lesson

题目简介

By the time the new pupil ___ enough courage to raise his hand, the bell__ for the end of the lesson

By the time the new pupil ___ enough courage to raise his hand, the bell__ for the end of the lesson

A．had gathered…was already ringing	B．was gathering…had already rung
C．gathered… had already rung	D．would gather… have rung

题型：单选题难度：偏易来源：不详

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