用duty(n.) smart(adj.) solve(v.) regard(v.) instead(adv.) 每一个词造句主要后面的时态.
问题描述：
用duty(n.) smart(adj.) solve(v.) regard(v.) instead(adv.) 每一个词造句主要后面的时态.
答
She has her duty to take care her mum.He is a smart boy.We need to solve this problem before it is too late.She regards her teacher highly.Having planned to drive,we walked instead.