Our teachers ask us ( ) (not litter) on the ground.We should ( )(_英语解答

Our teachers ask us ( ) (not litter) on the ground.We should ( )(keep) our classroom clean.

人气：453 ℃　时间：2019-11-21 05:09:11

解答

not to litter
keep
ask sb.no to do sth.叫某人别做某事
should do sth.应该做某事