【答案】We had a seven-day holiday last month,_____we went to Beijing on vacation.

We had a seven-day holiday last month,_____we went to Beijing on vacation.

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

【答案】

A

【解析】

句意：上个月我们有七天的假期，所以我们去北京度假了。A. so所以，表示结果；B. but但是，表示转折；C. or或者，表示选择；D. because因为，引导原因状语从句。“去北京度假”是前文“有假期”的结果。故选：A。