There will be no pollution on Mars,（）?

There will be no pollution on Mars,（）? There will probably be no school on Mars 同义句 There will prob 同义句转换：There will probably be no schools on Mars. 高一英语填空题,1.There will be no ___________(pollute) on Mars.2.I On Mars,there is no pollution ___ by traffic.A is caused B c Will there be more pollution in the future No------------- Will there be less pollution? Will there be less pollution there is now considered to be no life on the Mars if there is （） pollution,ourcity will be （）dirtier. There will be less pollution.(改为反意疑问句） There will be less pollution （ ） the air.这里要填什么,A.on B.in C.