根据句意及首字母提示，补全单词。

1. We are surprised to see your dog often c_____    the mice in the field.

2. My parents got up very early so that they could c              the first train to Beijing.

3. There is something strange in the s__     __. Maybe it is a UFO.

4. My next-door n_      __ lives in the house next to mine.

5. Our teacher was very angry when we made a lot of n____  _ in the classroom.