The most important thing about cotton in history is ___part that it played in ____Industrial Revolution.
Our bedrooms are all on the sixth floor, with its own bathroom.
Everyone had a form in his hand, but no one knew which office____.
Actually, works hard can bethey want to be, whether it is a pilot, an engineer or a manager.
―Which of the two poems do you like better? ―____ shorter one, of course. I think it’s really ____ most interesting one.
There was only one ____ of transportation in this mountainous area five years ago.