We must clean the classroom every day.He swept the floor yesterday.Jim bought a new bike last week.Adison invented the light bulb.改为被动语态

We must ___(keep) the classroom clean. 把Must we clean the classroom now?改成否定回答 oceans we keep must the clean.怎么连词成句. we must clean the classroom every day同义句转换 We must (clean the classroom).括号内提问 Must we clean the ciassroom now否定回答 we must keep the classroom clean的句子基本结构 we must clean the d______ plates and bowls We must clean the room 的 clean the room疑问句是_____ ______we do? We must clean the room（对clean the room）急 We must clean the room (对clean the room进行提问 we must clean the classroom every day同义句 we mustwe must clean the classroom every day同义句we must ______the classroom _____every day we must keep the room clean.clean为什么不加ing we must keep the classroom______- A.clean B.to clean C.cleaning D.cleaned We must have someone ___ the room.填clean up,为什么不是to clean up at school,we must clean the classroom 改为同义句 at school,we（ ）（ ）clean the classroom 英语翻译We must have ______ food and the food must ______ clean and be _______ _______ . We should keep the environment clean.We must not pump s___ into the river