以下列单词各造1个句字duty(n.) smart（adj.) solve(v.) regard(v.) instead(adv.)

1.It is our duty to defend our country.
保卫国家是我们的义务.
2.He is smart and can take care of himself.
他很精明可以照顾他自己.
3.She tried to solve a crossword puzzle.
她试着解答一道纵横字谜.
4.He is regarded as the best doctor in town.
他被公认为城里最好的医生.
5.He is too busy, let me go instead.
他太忙了,让我去吧.