The rules at school are useful for us, ________we have to follow them. A.but B.so C.or
2022-08-31 09:32:21 217次 山西省太原市2017-2018学年七年级下学期期中英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
The rules at school are useful for us, ________we have to follow them.
A.but B.so C.or
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