根据句意及首字母提示填空。
【小题1】The computer is now a useful t______for the family doctor.
【小题2】Giving up smoking is w______for you. You can have a good health.
【小题3】My brother has a master’s d______from Harvard(哈佛).
【小题4】Police tried to s______the two men who were fighting.
【小题5】You can’t e_______to learn a foreign language in a few months.