问题
The earth is our home. I hope there will be more trees and ____ pollution.
A:took place in
B:took place on
C:happened in
D:happened on;
B:took place on
C:happened in
D:happened on;
正确答案是：
同类题型
______ makes the school proud is_______ most students have been admitted by the key universities.
_______ email is becoming more popular withmany people, I still like writing to my friends.
I don’t understand how he can say that everything isfine _____ it’s so obvious that it’s not
Nowadays it is obvious that the Internet_______ our life rapidly.