The number of the workers in this factory _______ two hundred.
— Mom, my classmates are playing outside. Can I join them? — Not until your homework .
An English speech to the children tomorrow.
Old people should ________politely.
A terrorist attack at Kunming Railway Station ,and 29 people in the event .
— Have you finished your project? — Not yet. I’ll finish it if I ____________ ten more minutes.