A. underside B. novel C. lunar month D. clean my room A. astonished B. sterilize C. over-zealously D. first A. invaluable B. stressful C. ascertain D. sell out A. evolve B. magic C. room D. traffic police A. footprint B. erase C. controversy D. stranger A. leave out B. earphone C. evidently D. mark A. ingenuity B. noise C. aggressive D. insect A. get into the habit of B. discreetly C. Chinese opera D. ugly A. ointment B. apartment C. sticky D. spray A. ignorance B. sanguine C. contaminate D. good night