13. Don’t play by the river _______ you fall in and drown!
____production up by 60%, the company has had another excellent year.
The book is not easy.____ it's rather difficult.
The number of the employees has grown from 1,000 to 1,200. This means it has risen ____20 percent.
He spoke loudly ____ the audience could hear him clearly.
What idea can a man who is blind from birth have_____ color?