Hotels fill up fast during the busy tourist season, __________it is necessary for tourists to make r...
2022-11-05 15:24:20 63次 2014-2015学年北京东城区示范校高三上综合能力测试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Hotels fill up fast during the busy tourist season, __________it is necessary for tourists to make reservations in advance.
A. or B. so C. for D. but
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