题目内容：

根据句意，用括号内所给单词的适当形式填空。

1.Look, __________（this）are my brothers.

2.We are good ___________（friend）.

3.They are my ___________（parent）, my father and my mother.

4.Here are two nice _____________（photo）of my family.

5.What color ________（be）red and blue?