. For some time now , world leaders ______ out the necessity for agreement on climate change , the world economy and African development .
I have a dream that we will one day live in a ____ where we’ll have a lot of trees and fresh air.
The shop assistants there were not friendly to me because of ____ .
“How is your tour around the North Lake? Is it beautiful?” “It ____ be, but it is now heavily polluted.”
You had better go at once, ____ you?
Every morning the pupils read the texts ____ in the classroom.