根据句意写出所给单词的正确形式。
（1）Look! One of the children __________(swim)in the lake.
（2）Lily is much __________(health) than her sister.
（3）They _________(fly) to the UK, didn’t they ?
（4）Is _________(eat) too much good or bad for your body ?
（5）Mr. Lee _______________ (give) us a talk on the history of China tomorrow, isn’t he?