Mary has left the book on the table () purpose so that you can read it.

单项选择题What beautiful weather, ()?

单项选择题The train is running fifty miles ().

单项选择题Computers can do () work in a short time, but a man can not do () by himself.

单项选择题The facilities of the older hospital are () the new hospital.

单项选择题The policemen put the criminal ().