Everyone can borrow from this public library only two books _____ and they must be returned within a

题目简介

Everyone can borrow from this public library only two books _____ and they must be returned within a

题目详情


Everyone can borrow from this public library only two books _____ and they must be returned within a month.
A.at one timeB.at timesC.at the timeD.at a time
题型:单选题难度:偏易来源:不详

答案

D
本题的含义是每个人每次可以在图书馆借2本书,他们必须在一个月内归还。at a time可以表示一次或每次的意思,故本题选D。

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