You can’t be ______ when you camp _____ a high altitude, ________ the air is thin. 
#19622
A
enough careful; at; which
B
too careful; at; where
C
careful enough; on;at which
D
too careful; on; that
推荐题目
It is not         to discuss the questions again and again.
#19320
A
worth
B
worthy
C
worthwhile
D
worthy of
In order to complete his work ahead of time, he got up earlier_____
#19588
A
than usual
B
as usual
C
than usually
D
as usually
The painting was         what it used to be because it was once watered by rain.
#18751
A
something like
B
nothing like
C
anything like
D
nothing at all