Everyonecanborrowfromthispubliclib

发布时间:2020-07-25 14:55:58

Everyone can borrow from this public library only two books _____ and they must be returned within a monthA.at one timeB.at timesC.at the timeD.at a time

网友回答

D解析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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