—Why was our foreign teacher unhappy yesterday?
—News about the tsunami striking her country an attack of homesickness.
A. set for
B. set out
C. set about
D. set off
网友回答
A. set for
B. set out
C. set about
D. set off
解析：
set off引起，激起。A letter from his home set off an attack of homesickness…。set out出发，开始；set about开始着手。