------ Can I pay the bill by check ? ------ Sorry, sir. But it is the management rules of our hotel that payment _______ be made in cash.
__________ the reason , research shows that laughter is good for your health.
The boy _______to his mother that he had _______ the table for supper and then ____ down to have a rest.
The young lady often makes meals ______ for herself for she is _____ about what she eats.
Price control would gradually disappear ________ a free market.
As we know, nothing can be equal to the ______ of parents for their children in the world.