Did you notice your mother go out a moment ago —No, I didn’t . I ____ TV then.

The final exam is coming. I don’t think I can pass it though I work hard. — Be confident! Even students with ___intelligence can be successful, let alone clever students like you![ ]

My uncle from Hong Kong has changed so much that I could hardly ________ him at the airport.[ ]

He lost his key. It made him ________ in the cold to wait for his wife’s return.

下列一组单词中，划线部分发音不同于其它三个的单词是_______。