You are supposed ________ the work yesterday but you forgot.
The government has to close those small factories to prevent the water of the river ______.
He wants to see changes in the company and I am sure he will,______.
The traditional view is ____ we sleep because our brain is “programmed” to make us do so.
Then you usually lie there just ______ the ceiling, thinking about everything that could go wrong.
—What do you think of his opinion? —None has given me ___________ piece of advice.