Thefarmerhadtowearheavybootsinthewinterbecausethefieldsweretoowetand________.
A、earthyIwon't________thosechildrenmakinganoiseinmyhouse!
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
________ so many people in the United States been out of work as today.
Others argue that since the earth has endured a long string of ice ages in the last two millionto three million years, any warming is ________ to be temporary.
Insomeschoolschildrenwhoprefertoreadbooksratherthan________footballbecomesocialoutcasts(被抛弃者).
