He is one of the world-famous musicians. By the time he was six, he composing.
A. had begun
B. begins
C. would begin
D. was beginning
He is one of the world-famous musicians. By the time he was six, he composing.A. had begu
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解决时间 2021-01-03 15:05
- 提问者网友：鼻尖触碰
- 2021-01-03 02:14
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- 五星知识达人网友：舊物识亽
- 2021-01-03 03:38
(答案→)A. had begun B. beginsC. would beginD. was beginning解析：考查谓语动词的时态 by +过去时间，谓语动词（主句）常用过去完成时态；by+将来时间，谓语动词（主句）常用将来完成时态
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- 1楼网友：像个废品
- 2021-01-03 05:01
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