The air in the country is ________ than ______ in the big city.
A.cleaner, one | B.much more cleaner, that |
C.much cleaner, that | D.much more cleaner, this |
The air in the country is ________ than ______ in the big city.
A.cleaner, one | B.much more cleaner, that |
C.much cleaner, that | D.much more cleaner, this |