If there are     trees, the air in our city will be      cleaner.
#61085
A
less; more
B
more; more
C
more; much
D
much; more
推荐题目
Xi’an is one of      capital      in China. 
#61555
A
older, city
B
the older, city
C
oldest, cities
D
the oldest, cities
Jack seems ________than you _______ready for the exam.
#61299
A
busy, to get
B
much busier, getting
C
busier, to get
D
more busier, getting
Chemistry seems to be _____ for me of all the subjects.
#61328
A
difficult
B
too difficult
C
more difficult
D
the most difficult