A. go ahead B. hand C. government D. skyscraper A. distasteful B. heartily C. protest D. throng A. agent B. possibility C. teaspoonful D. gardener A. accustomed B. flap C. noisy D. monstrous A. badminton B. riverside C. consideration D. nitrogen A. obstacle B. gear C. descendant D. beg A. ceaselessly B. paper cutting C. aching D. listen and do A. helmet B. invisible C. toxic D. evolve A. multicultural B. location C. impose D. wake up A. approach B. wildlife C. artificial D. equip