根据句子意思，用括号中所给单词的适当形式填空。

1. I like working here because everyone is ________ (friend).

2. Alan is the ________ (win) of the Photo Competition this year.

3. Look! Two ________ (monkey) are fighting for food over there.

4. My cousin is used to ________ (study) with his new friends in Australia.

5. Last week I went to my ________ (aunt) house to teach her how to send e-mails.