运用 用上面所提供的短语的适当形式填空 ① The bad news about the company ________________ a

wave of people selling its shares (股份)．

set off

②The moment his wife returned home, he ________________

cleaning up the messy house.

set about

③—Have you ________________ some money for your son's

education?

set aside

—No.I haven't made any plans for that yet.