We must keep it the rules( ).填什么,只能填一个~

we must keep the ( )on the road we must keep the( ) on the road 改错 We must keep the classroom cleanly. We must ___(keep) the classroom clean. We must keep the window______(open). we must keep( ) in the hospital we must s______ the earth and keep it clean and beautiful We must keep the air clean and never _________ (pollute,polluting) it. 翻译then the food won't get too hot.we must keep it cool. We must keep it the rules( ).填什么,只能填一个~ we must keep the reading room quietly还是we must keep the reading room quiet It is important that we ( )the news secret.A:must keep B:would keep C:should keep D:kept应该选哪个,为什么 是we must keep in mind that 加从句还是we must keep it in mind that 加从句 we must keep the balance of ( ).(自然界)填正确形式 同意表达we must keep quiet in the library we must put rubbish bins and keep the environment oceans we keep must the clean.怎么连词成句. we must keep quiet at the library错误在那里