根据句意, 用所给单词的适当形式填空

1. My father and my uncles are all __________(policeman).            

2. That is the __________(begin) of the garden tour.                      

3. Are the doctors and nurses in the hospital __________(friend) to you?  

4. The koalas often sleep during the day and eat __________(leaf) at night.

5. Mary enjoys __________(watch) soccer games very much.