改错：Wecanusethelibraryaroundaclocksinceitopens365daysaye...

问题详情：

改错：We can use the library around a clock since it opens 365 days a year and 24 hours a day.

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【回答】

第一个a→the　此处around the clock “昼夜不停”，是一个固定词组。

知识点：冠词

题型：短文改错