—The speaker is a tall man with glasses.—Then it be Mr. Smith, who is short and thin.
------Why do you turn back?------ Oh, the bridge ahead_______.
People in the west make_______ a rule to buy Christmas presents for their relatives and friends.
I remember everything ______it had happened yesterday.
It is required that students______ mobile phones at school, so seldom_______ them using one.
------Tom is never late for work. Why is he absent today?------ Something _______ to him.