Be 动词、形容词性物主代词和人称代词主格练习题一、用be动词的适当形式填空1. I _ a boy. _ you a boy? No, I _ not.2. The girl_ Jacks sister(姐姐).3. The dog _ tall.4. The girl with big eyes(有大眼睛的) _ a teacher.5. _ your brother(哥哥) in the classroom?6. Where _ your mother(妈妈)? She _ at home(在家).7. How _ your father(爸爸)?8. Mike and Jack _ at school(在学校).9. Whose(谁的) pencil _ this?10. Whose books _ they?11. That _ my red pen.1