So difficult it to work out the problem that I decided to ask Tom foradvice.[ ]

Why do people kill the whales ——– They kill the whales _______ the meat , fat and oil .

_______ people have visited the _______ stone bridge.

Oh，it’s 9 pm.I have to go now.But it’s raining heavily outside.—You’d better wait ________the rain stops.

So noisy____ in the dining hall that he could only make himself heard by shouting at the top of his voice.