1、The playground looks very big and clean.（改为一般疑问句,并作肯定回答）
2、Millie's classroom is on [the ground]floor.（提问）
【】【】is Millie's classroom on
3、We also have an art room and two music rooms at our school.（保持句意不变）
【】【】an art room and two music rooms at our schoo【】.