1.it's polite to give your ___(sit) to others on buses2.last year i ____(can not)ride a bike
问题描述：
1.it's polite to give your ___(sit) to others on buses2.last year i ____(can not)ride a bike
3.he was __(happy)because he got 58 points in the exam
4.Children,___(not be) late next time
5.there's no time ___(open) it
答
seat
couldn't
unhappy
don't be
to open