题目内容
By the time he was 14, Mozart many pieces of music for violin, piano and for orchestra.
A. has composed B. had composed
C. composes D. composed
B
【解析】
试题分析:考查过去完成时用法。By the time到...为止,引导时间状语从句时,如果从句时态为一般过去时,主句用过去完成时;如果从句时态为一般现在时,主句用现在完成时。句意:到他14岁的时候,莫扎特已经为小提琴,钢琴和管弦乐创造了很多作品。故选B
考点:考查过去完成时用法。
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