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Shehastowashherclothessevendays.a.everyb.eachc.afterd.before

题目详情
She has to wash her clothes ________ seven days.
a.every
b.each
c.after
d.before
▼优质解答
答案和解析
选a
这里考察every的用法
every可跟数词连用意为“每隔---的;每----”
every seven days 每隔七天
相当于every other week 每隔一周