根据句意和空缺处所给首字母写单词。答案书写于规定的位置。

1. I have m________hobbies, such as swimming, rowing and hiking.

2. He said he would never f_________ the trip to Mount Fanjin.

3. We should do more exercise to keep h ________.

4. Tongren have developed r           into a modern city in the recent years.

5. My little sister is so young that she can't look after h________.