根据句意及括号内所给单词的提示填空，每空一词。
1. ______(be) your pencil red? No, it isn't.
2. The girl is my sister. __ (she) name is Helen.
3. He is my brother. He has two______(dictionary).
4. Where are your ______(parent)?
5. I have some nice (watch).
6. (thank)for your answer.
7. I have a set of __ (key) in the drawer.
8. Those ______(boy) are in the classroom.
9. This is my ______(father) jacket. It's green.
10. ______(this) are my two friends.