A baby might show fear of an unfamiliar adult, _______ he is likely to smile and reach out to another infant.
B
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Othersarguethatsincetheearthhasenduredalongstringoficeagesinthelasttwomilliontothreemillionyears,anywarmingis________tobetemporary.
Inthefuture,more______shouldbeplacedontheeducationoftheyoung.
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
She________hernervousnesstotheimportanceoftheinterview.