—Must we do something to keep our country clean?—__________.

—Must we do something to keep our country clean?—__________. We must do a lot of work to keep our environment clean and t Must wu do shomthing to keep our city clean?_______ a.yes we We must keep our room clean.Dirt ... We must keep our school clean. We must keep our country ________. -What should we do?-We must keep our classroom _____.A.clean we must try our best to keep environment clean句子成份划分 We must keep our country_______. A.cleaning B.clean C.to cle we must keep our city ( )every day.yes,miss gao A.clean B.to 初中英语变为被动语态we must keep our classroom clean we must keep our classroom clean改被动语态