_________ is a growing world problem, and nowadays the United Nations and its member countries _________hard to deal with it．
#6050
A
Desertification; are working
B
Desertified ; worked
C
Desert; work
D
Desertification; have worked
推荐题目
These new books are a very welcome _________ to the school library.
#6138
A
addition
B
arrival
C
attitude
D
audience
There are usually at least two _____ of looking at every question.
#7486
A
ways
B
directions
C
views
D
opinions
I bought a dress for only 10 dollars in a sale ;it was a real _______.
#5602
A
exchange
B
bargain
C
trade
D
business
My ______ of tomorrow’s activity is going out for a picnic with my classmates.
#6342
A
opinion
B
thought
C
mind
D
idea