A. valid B. space flight C. supersonic D. fall ill A. chairperson B. cowboy C. Stockholm D. hurry A. eat the cake B. Princeton C. string bean D. masterpiece A. paragraph B. under construction C. on the right D. sugar A. quotation B. religious C. go on D. shy A. boss B. unbelievable C. I dare you D. reveal A. Lancaster B. devour C. sheriff D. active A. sunburnt B. little C. in a nutshell D. aircraft A. crowd in B. freely C. celery D. after-school A. handbag B. hum C. accept D. blink