i have been a teacher for twenty years.

i have been a teacher for twenty years.
i ___ a teacher twenty years ___ (保持句意不变)
英语人气:123 ℃时间:2019-10-19 07:47:01
优质解答
I have been a teacher for twenty years.
我已经做了20年教师了.
I _became__ a teacher twenty years __ago_ .
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