they have worked in the factory for three years,（对划线部分提问)
they have worked in the factory for three years,（对划线部分提问)
how many have they worked in the factory?
但是答案用的是how many呀？所以我有点想不通，答案是不是错的啊
how many have they worked in the factory?
但是答案用的是how many呀？所以我有点想不通，答案是不是错的啊
英语人气：334 ℃时间：2019-08-22 16:42:06
优质解答
是对three years提问?用how long似乎好些.
我来回答
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