1.We hoped that they ... this problem
A)will solve
B)solve
C)is solving
D)would solve
2. We hope that they ... this problem
A)will solve
B)solve
C)is solving
D)would solve
3) They say that the ozone layer ... gradually
A)is destr
B)destruct
C)was destructing
D)destructed
4 They say that the ozone layer ... by people's actvies
A)is destructing
B)destruct
C)was destructing
D)destructed

http://znanija.com/task/11828290

1. We hoped that they ... this problem. D) would solve 2. We hope that they ... this problem. A) will solve 3) They say that the ozone layer A) is destructing gradually 4 They say that the ozone layer ..A) is destructed . by people's actvies