---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 city is ______ than it used to be. Something must be done to stop it.

A．good             B．bad              C．worse            D．better

Now the air in our city is _______ than it used to be. Something must be done to stop it.

Now the air in our hometown is ___________ than it was before. Something must be done.

Now the air in our city is _______ than it used to be. Something must be done to stop it.

A. very good        B. much better          C. rather bad      D. even worse