—I think everyone must do his best to _______pollution.—If so, there will be a good future for people of tomorrow.A. keep B. stop C. stand
Where’s Tom ?His motherhim now.
Paul and I tennis yesterday. He did much better than me.
I knocked on the door butanswered.
-----Can you ride a horse? -----No,I
We have a lovely room. It’s one ofin the hotel.