A. reward B. unforeseen C. kettle D. mango A. boss B. break C. knock D. board A. pit B. terrible C. squeeze out D. clavichord A. selfless B. wag C. now D. self-discipline A. handwriting B. rostrum C. shark D. defeat A. travel B. pencil sharpener C. broke D. ask A. crane B. find C. gaoler D. definite A. minute B. set about C. local D. risky A. repetition B. concept C. boil D. set A. in the form of B. make use of C. behind D. account