It'smore________tobuyaseasonticketifyoutraveleveryday.
Othersarguethatsincetheearthhasenduredalongstringoficeagesinthelasttwomilliontothreemillionyears,anywarmingis________tobetemporary.
Theoppositionleaders________thegovernmentfornottakingactionsooner.
Shehadclearlyno________ofdoinganywork,althoughshewasverywellpaid.
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.