新目标英语 第21页
《I'll help to clean up the city parks》PPT课件13-第一PPT
《I've had this bike for three years》PPT课件8-第一PPT
《Why do you like pandas?》PPT课件10-第一PPT
《When is your birthday?》PPT课件14-第一PPT
《Is this your pencil?》PPT课件12-第一PPT
《When was it invented?》PPT课件27-第一PPT
《If you go to the party you'll have a great time!》PPT课件22-第一PPT
《An old man tried to move the mountains》PPT课件9-第一PPT
《I'm going to study computer science》PPT课件18-第一PPT