Thechildrenplayedgamesquietlyintheirroomyesterday. 　　Yesterday,thechildrenplayedgamesquietlyintheirroom. 　　Yesterday,intheirroom,thechildrenplayedgamesquietly. 　　Yesterday,quietly,thechildrenplayedgamesintheirroom. 　　以上答案均可.但强调的重点不同,看你的需求选择一个吧.