A. oxygen B. false C. controversy D. August A. ratio B. June C. on foot D. add to A. bunny B. infect C. overpopulated D. circus A. RSVP B. bone C. in half D. meet A. suitable B. hostess C. unduly D. roll A. November B. precious C. scanty D. bag A. a few B. engrave C. milk D. be supposed to A. the Great Wall B. story C. hitchhike D. gay A. paper cutting B. over-zealously C. national D. dig out A. contest B. cough C. honour D. lay eggs