【正文】
fifteen sixteen seventeen eighteen nieen a Walkman a cassette Unit 3 a radio a video a diskman a CD a television a puter a keyboard a mouse a table Whose pencil box is this? It’s ’s. Wangling Whose book is this? Whose are these? Whose ? ? It’s ’s. Peter It’s Ann’s. pencilseraser is this They are Ken’s. Whose watch is this It’s yours. Tal