【题目】 Snakes come near the house now and then. We have to ______ finding a solution to driving them away.
A. set about B. set down C. set out D. set up
在线课程【答案】A
【解析】
试题分析：句意：蛇经常来这房子附近。我们必须着手找到把它们赶走的办法。A. set about着手；B. set down 放下；C. set out开始；D. set up建立。 结合句意可知选A。