By the time he was twelve, Edison to make a living by himself.
A. would begin
B. has begun
C. had begun
D. began
By the time he was twelve, Edison to make a living by himself.A. would beginB. has begunC
答案:2 悬赏:30 手机版
解决时间 2021-12-25 21:11
- 提问者网友：皆是孤独
- 2021-12-24 21:34
最佳答案
- 五星知识达人网友：渡鹤影
- 2021-12-24 22:03
A. would beginB. has begun(答案→)C. had begunD. began解析：考查时态。By…到…为止；与完成时连用。后面接the time he was twelve是过去时，故主句中使用过去完成时。句意：到他12岁的时候，Edison已经开始靠自己谋生了。故C正确。
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- 1楼网友：摆渡翁
- 2021-12-24 22:38
对的，就是这个意思
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