A. on guard B. truth C. science D. ouch A. turning B. quilt C. catastrophe D. once in a while A. seem B. envious C. rebuild D. blind A. increase B. expect C. harness D. blunt A. You're welcome B. become C. health care D. boulder A. suitcase B. agreement C. litre D. twenty-nine A. story B. uncanny C. club D. call off A. be able to B. mail C. bag D. thanks to A. mat B. struggle C. effort D. oilfield A. politician B. representative C. round-up D. require