More and more people have a low-C life and the air is getting much    than a few years ago.
#61095
A
clean
B
cleanest
C
cleaner
D
the cleanest
推荐题目
Who is ______ of the three young men?
#60618
A
clever
B
cleverer
C
cleverest
D
the cleverest
I think Internet is ___________ than books.
#60686
A
important
B
importanter
C
much important
D
much more important
The Yellow River is the second _________ river in our country.
#60973
A
the longest
B
longest
C
longer
D
long
Who is ______, John, Daniel or Jack? 
#61240
A
old
B
older
C
oldest
D
the oldest