1. He made his way through the crowd to ______(打招呼)us.
2. The hospital tries to ______ (保证)that people are seen quickly.
3. ______ (祝贺)on a superb performance!
4. As a punishment, she was not ______ (允许) to attend any school activities.
5. They are ______ (禁止)from revealing details about the candidates.
