Question

【题目】I was very tired last night, ________ I went to sleep earlier.

A. butB. orC. soD. for

Answer 1

【答案】C

【解析】

句意：我昨晚很累，所以我睡得比较早。

本题考查的是连词的辨析，A. but但是；B. or 或者；C. so所以；D. for因为，根据所给空前面的I was very tired last night和后面的I went to sleep earlier可知，前后句是因果关系，前面句子是后面句子的原因，故答案选C。