There are some warnings in some countries ______ over exploitation of underground water has caused the decline of wetland and increase of desertification.
#67588
A
which
B
where
C
what
D
that
推荐题目
___is certain is ___prevention is more important than treatment .
#73499
A
It;that
B
What;that
C
As;what
D
What;what
5.The growing speed of a plant is influenced by a number of factors, _______ are beyond our control.
#74680
A
most of them
B
most of which
C
most of what
D
most of that
If there no buying and selling of animals, there no killing in nature.
#41372
A
is; will he
B
will be; will be
C
is; is
D
will be; is
When you ______ at a restaurant, please order just enough food.
#67701
A
eat
B
will eat
C
ate
D
have eaten
In my opinion, life in the twenty-first century is much easier than ___________.
#67724
A
that used to be
B
it is used to
C
it was used to
D
it used to be