---Will there be less pollution ?   ---No,_____

    A. there won’t     B.it isn’t             C.it wasn’t          

---Will there be ______ cars in the future?

---No．there won't．So there will be ______ pollution．

1. A.
   more; less
2. B.
   more; fewer
3. C.
   less; less
4. D.
   fewer; fewer

---Will there be less pollution ?   

---No,_____

1. A.
   there won’t
2. B.
   it isn’t
3. C.
   it wasn’t