A. sodium B. sour C. Oxford D. healthy A. apartment B. future C. invisible D. bubble A. Mexico B. riverside C. oddly D. exciting A. anarchy B. think of C. find out D. draft A. sleepy B. high-rise C. banker D. central A. safe B. dream C. guess D. on the weekend A. subtle B. free of charge C. Sydney D. worry about A. good job B. dustman C. football player D. regiment A. happily B. desolate C. as usual D. gentleman A. rigid B. stay C. thirty D. north-east