.______ World Exposition in 2010 is the first registered World Exposition in ______ developing country.
This problem is not worth____ again.
Excuse me, but could you tell me ? I’d like to drop him a line.
Jack is honest man and we all find it pleasure working with him.
He was a bit nervous. He ____ his breath with a soft sound that was almost heard by the audience.
—It will be three months ____ we meet again.— Then we can keep in touch by email.