-I saw Mark on the playground just now.–No, it _______ be him. He is ill in bed at home.
—What ____ news! —Yes, all of the children were ____.
The man refused to say sorry to me, ____ it was his mistakes(错误).
He feels lonely because he has no close friends ____.
If you are ____ trouble, please call me ____ 72335611.
—Excuse me,will Li Lei go on a _________ visit to Beijing? —Sure.