People are concerned about the quality of the air they ______.
#66043
A
hear
B
eat
C
drink
D
breathe
推荐题目
——Did your friend accept your invitation? ——No, he ____ refused. 
#63879
A
as far as
B
as well as
C
as soon as
D
as good as
Peter must be ill. It’s the only thing that can  _________ his strange behavior.
#77919
A
lie in
B
result from
C
account for
D
explain about
It is a slow process to _______ a good knowledge of English.
#67178
A
acquire
B
earn
C
assist
D
control