SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
________ to the papers is restricted to Defense Department personnel only.
Thefarmerhadtowearheavybootsinthewinterbecausethefieldsweretoowetand________.
Attendance at football matches have _____ since the coming of television.
Sixty per cent of television viewers chose him as their _______ actor.
Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.