By the end of this year Mr.Smith ________in our company for exactly three years.

By the end of this year Mr.Smith ________in our company for exactly three years.
为什么中间是填 will have worked
还可以填 has worked
英语人气:380 ℃时间:2020-03-02 03:43:40
优质解答
By the end of this year截止到年底
因为还没有到年底,又强调一个完成的状态
要用将来完成时
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