倒装句练习答案及原因9.-------- playing soldiers.A.Inside the room were

倒装句练习答案及原因9.________ playing soldiers.A.Inside the room were two boysB.Inside the room two boysC.Were two boys inside the roomD.Inside the room was two boys23.Not once ______ their plan.A.did they change B.they changedC.changed they D.they did change