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.