1.Our classroom must be made ______ all the time.(clean)

Our classroom must be made ____ all the time.A clean B to cl Our classroom must be made _______ all the time. We must keep our classroom clean The sentence stucture here Our classroom is made ______ every day.A clean B to clean C ______ clean the classroom. Our classroom is the ________（clean） of all. Our classroom must ______ clean eve I am going to clean our classroom tomorrow 和 The boss made t You must clean the classroom.(改为祈使句) We must ___(keep) the classroom clean. Must we clean the classroom now?No,you needn't.It ______ aft 英语：keep用法1.We must keep the classroom .A.clean B.to clean C.