Air is________and of no smell but we can feel its motion when there is a wind. 
#19675
A
unavoidable
B
unavailable
C
unaccessible
D
invisible
推荐题目
_______she is not so cheerful________she used to be?
#18215
A
How it is that;as
B
How is it that;as
C
Is it why;that
D
Why is it that;what
 Life in that poor town is _______ a bed of roses.
#20397
A
by far
B
above all
C
far from
D
all the same