At present, the butter factory is still polluting the river though it ______ to stop.
—Would you like to help me with my work? —_______
Before her first Harry Potter came out in 1997,J.K.Rowling ________ English for a living in Portugal.
—How's your project going,Jack? —________.I'm half finished with it.
________ an hour every day has made a considerable difference to my health.
Not only ________ polluted but also ________ crowded.