Insomeschoolschildrenwhoprefertoreadbooksratherthan________footballbecomesocialoutcasts(被抛弃者).
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
EachyearintheUnitedStates,manyblackteenagers_______ofschool,eitherbecausetheycannotkeepuportheyhavetoworktosupporttheirfamily.
ItwasthreeBritishsportsmenwho________banneddrugs.
TheTVstation,in________tomassivepopulardemand,decidedtocontinuethesoapopera(肥皂剧).
Tostudyaforeignlanguage,__________.