Choose the right words. 1) we waste water. a) shouldn t b) can t c) must 2) the air pollution is awful! it s getting every year. a) warmer b) worse c) dark 3) you can recycle those bottles.don t put in the dustbin a) it b) him c) dark 4) would you like salling? a) go b) to go c) going 5) people should their rubbish. a) recycle b) to recycle c) will recycle 6) a would you like to sit down? b a) yes, i would. b)yes, i like c) yes, i do.