By the time he retires, professor Baker for almost forty years．
A. will have taught
B. had taught
C. has taught
D. is teaching
By the time he retires, professor Baker for almost forty yearsA. will have taughtB. had
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解决时间 2021-04-04 04:51
- 提问者网友：疯子也有疯子的情调
- 2021-04-04 00:12
最佳答案
- 五星知识达人网友：洎扰庸人
- 2021-04-04 00:22
(答案→)A. will have taughtB. had taughtC. has taughtD. is teaching解析：句意：到贝克讲授退休时，他将从事教育40年了。这里教授还未退休，退休发生在将来，又因为By the time故用将来时的完成时，故选A。
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- 1楼网友：风格不统一
- 2021-04-04 01:06
这个解释是对的
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