Parents’ opinions on studying abroad differ greatly _____their children’s ____their aims.
Water, which seems so simple and common, is _____ makes life possible.
_____ is no possibility that Bob can win the first prize in the match.
—Have you ever ridden a horse ? —No, but I _____ a camel when I visited Egypt last year.
—I must apologize for ________ ahead of time. —that’s all right.
________ I understand you,I still can’t support you.