根据句意,用所给单词或短语的适当形式填空。
population, pollute, and so on, because of, in need |
Water has made rivers dirty
Which country has the largest _in the world.
Most people are sick the cold weather.
—What sports do you like?
—I like playing basketball, playing table tennis, playing football, running _____ ____ .
A friend _ __is a friend in deed.