lt's one's duty to do sth 如何造句

lt's one's duty to do sth 如何造句
lt's one's duty to do sth 如何造句

lt's one's duty to do sth 如何造句
It's our duty to protect the environment

It is your duty to get your homework done
你有责任把你的功课完成

It is our duty to look after the old。 照顾老人是我们的责任