I think humour is a vital form of entertainment, ____ it makes us laugh and laughing keeps us health...
2023-01-02 00:23:46 80次 2013届湖南省株洲市高二上学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I think humour is a vital form of
entertainment, ____ it makes us laugh and laughing keeps us healthy.
A. when B.
after C. if D.because
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