A. injure B. recognise C. custom D. September A. chemistry B. upwards C. cooperation D. swarm A. elderly B. leave C. classical D. dry-clean A. physics B. to C. hold back D. occupy A. ant B. put on C. fertilizer D. classmate A. background B. geography C. heal D. clump A. slept B. goes C. school is over D. same A. geology B. everyone C. enormous D. middle school A. pastoral B. middle C. plus D. evidence A. herring B. bet C. cab D. excited