【题目】After the earthquake, people _________ rebuilding their homes.
A. set off B. set about C. set out D. set up
在线课程【答案】B
【解析】
试题分析：考查动词set的短语。短语set off引起，使...发生；引爆；set about开始，出发；set out to do sth开始做某事；set up建立，成立；本句中动词短语“set about doing sth”意为“开始做某事”，句意：地震以后，人们开始重建家园。故B正确。