trả lời các câu hỏi sau:
1. Is this your pen? - No, ______________________________.
2. Are these her books? - Yes,______________________________.
3. Is they doctors? - No, ______________________________.
4. Is that his eraser? - Yes,______________________________.
5. Is Nam a student? - No, ______________________________.
1. No, it isn't
2. Yes, there are
3. No, they aren't
4. Yes, it's
5. No, it isn't
1.No,it isn't
2.Yes,they are
3.No,it isn't
4.Yes, it is
5.No,it isn't