题目：
根据句子提示填空。
1. —Is this your pen?
—Yes, ________ is.
2. —Is she your mother?
—No, ________ isn't.
3. Mr. Green teaches me English. ________ is my English teacher.
4. —Are you a teacher?
—Yes, ________ am.
答案：
1. it 2. she 3. He 4. I
根据句子提示填空。
1. —Is this your pen?
—Yes, ________ is.
2. —Is she your mother?
—No, ________ isn't.
3. Mr. Green teaches me English. ________ is my English teacher.
4. —Are you a teacher?
—Yes, ________ am.
1. it 2. she 3. He 4. I
