It is generally considered unwise to give a child ____ he or she wants.
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.