摘要: -Is Bob still performing? -I’m afraid not. He is said the stage already as he has become an official. A. to have left B. to leave C. to have been left D. to be left [解析]选A.考查不定式的时态.根据下文he has become an official可知.离开舞台这个动作已发生了, 且leave与he之间是主动关系.故选A.

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