Question

【题目】As Tom is a brave boy, he knows how to stay calm when there is danger. Which word can replace (代替) “As” here?

A. So B. Since C. Until D. If

Answer 1

【答案】B

【解析】试题分析：句子意思是：因为Tom是一个勇敢的男孩，当有危险时，他知道怎样保持冷静。As在此句中表示原因。A于是；B从------以来；既然，因为；C直到------；D如果。故选B。