—Where is Jack? — In the sitting room. He _______ TV with his brother.
—About income, I think most people deserve more than what they get.— ______.
Most scientists seem to agree that ____certain limit should be set on ______consumption of cars to ease air pollution.
They are determined to go into the dark cave, ______ my warning of danger.
一"Peter, have you got your new flat furnished?—Yes. I ______ some used furniture and it was a real bargain.
These diagrams are especially helpful when we have a concrete problem ______ at hand.