Question

【题目】Rules are helpful to us, ______ we have to follow them.

A. so B. but C. or D. because

Answer 1

【答案】A

【解析】

试题分析：句意：规则对我们是有帮助的，所以我们得遵守它们。so所以；but但是；or或者；because因为。前后句之间是因果关系，所以选A。