A. perpetual B. series C. indoor D. help oneself A. point B. highly C. gravity D. brightly A. school uniform B. decade C. roller coaster D. once or twice A. although B. view C. plenty of D. trolleybus A. staggering B. throw C. pie D. boring A. drag B. over C. ambition D. earphone A. carbon B. government C. airport D. cook meals A. divorce B. break the record C. take a vacation D. direct A. display B. a couple of C. monitor D. ring up A. by plane B. develop C. speed D. squire