—Hi, Mr.Brown! May I pick a flower in the park?—_______.
---__________in New York does he live? --- Maybe the west.
--Would you like me to turn down the radio a bit? --______.I’m used to working with the radio on .
Once a neighbour _______me _____ playing my radio too loudly.
Although ________ to stop, he kept on working.
Something must be done to prevent factories sending out poisonous gases so as to keep the city _________. A polluting B. from polluting C. pollute D. from being polluted