A. knock B. frequent C. desk D. poor A. luxury B. illumination C. classroom D. as a result A. connect with B. loudly C. water bottle D. should A. operation B. magical C. motorway D. Chinese book A. mariner B. infections C. squeak D. crayon A. protect from B. star in C. life D. school A. be harmhul to B. clean the door C. not bad D. storybook A. disability B. anyhow C. English book D. grey A. take up B. lure C. be worried about D. chair A. extraordinary B. situation C. take the place of D. marker