We are playing ping-pong 怎样改为否定句?

We are playing ping-pong 怎样改为否定句? how many people are playing ping —pong? It's 9:00 now,we are having a break.There are many students on the playground.Many boys are playing sports.There are there boys are playing soccer,four boys are playing basketball,and two boys are playing ping-pong.So I think the boys are very strong Thay aer playing ping-pong over there 改为否定句Thay are playing ping-pong over there 改为否定句 We won the ping-pong game.We are very are,playing,we,togther.连词成句 We are playing football now.提问. We saw the pupils are playing football. we don't stop playing as we are old,we grow old because we stop playing we are playing football..对we进行提问 Let's go and ()playing ping pongplaying the ping pongto play ping pongplay ping pong理由 She often ____ ping-pong with her friends.Now they ____ ping-pong at school.A.play,play$^$%#%$%^#She often ____ ping-pong with her friends.Now they ____ ping-pong at school.A.play,play B.plays,playing C.plays,are playing D.plays,is playing 连词成句（英语）各位帮帮忙哦、 1are,in,classroon,you,playing,ping-pong,the playing ping pong with my friends ()fun 汉译英：Jack正在和Allen打乒乓球请问我这样翻译对不对：Jack and Allen are playing ping-pong.或者这样：Jack is playing ping-pong with Allen.请问那一个句子对,还是两个都对. are garden playing not in we the 连词成句 we are playing football on the playground.(改为一般疑问句) We are playing basketball at school(对at school提问)