_________ 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
Four years had passed, and I found Mary had＿＿＿＿＿．
#7203
A
little white hair
B
some white hair
C
much white hairs
D
a few white hairs
As for hungry, you won’t get much from those who never went through it
#5471
A
kindness
B
sympathy
C
advice
D
regret
It’s my to make sure that the disabled people in our neighborhood have access to all public buildings.
#6286
A
ambition
B
behavior
C
dignity
D
assistance
He always brings me a pretty gift he comes to visit me.
#5714
A
by the time
B
every time when
C
every time
D
at times