问题描述：
He promised to make a phone call to me ( ).
A.every fifth day B.every five day C.every five day D.each five day.
我要答案+理由+翻译!
C.every-five day
D.each five days
A.every fifth day B.every five day C.every five day D.each five day.
我要答案+理由+翻译!
C.every-five day
D.each five days
问题解答：
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