The government has to close those small factories to prevent the water of the river ______.
He was born in Beijing and _____ by his grandma in a seaside village.
People _____ much more by their gestures than by their words.
Whoever leaves the lab last, _____ all the lights are turned off.
Nobody can tell _____ the future world will look like.
— I put him down for a well-educated man. —______ ? — I mean that he's a well-educated man.