---Now the air in our hometown is even       than it was before.

---So we must do something to stop it.

---Now the air in our hometown is even ________ than it was before.

---So we must do something to stop it.

1. A.
   better
2. B.
   much better
3. C.
   more better
4. D.
   worse

---Now the air in our hometown is even ______ than it was before.
---So we must do something to stop it.

1. A.
   better
2. B.
   dirty
3. C.
   more better
4. D.
   worse

---Now the air in our hometown is even __________ than it was before.

---So we must do something to stop it.

A. better           B. dirty            C. more better          D. worse

—Now the air in our hometown is even_____ than it was before.

—So we must do something to stop it.

A. better 　　 B. dirty 　　　 C. more better D. worse

––Now the air in our hometown is even_______ than it was before.

––So we must do something to stop it.

A. better           B. more dirty       C. more better      D.  worse