______ we know, the air quality in the city has improved over the past two years.
#14924
A
That
B
As
C
What
D
It
推荐题目
To save class time, our teacher has ________ students do half of the exercise in class and complete the other half for homework.
#17099
A
us
B
we
C
our
D
ours
—All the volunteers were very tired, but of them took a rest.—They were busy looking for the missing people.
#57326
A
neither
B
all
C
both
D
none