b. Em hãy chọn một trong 3 phương án sâu để hoàn thành câu. 1. The bird sang (its/it/it's) happy tune. 2. Listen to (her/hers/her's) carefully 3. (His/He/She) uncle is a doctor. He is a nice person. 4. That old man is kind to (our/us/ we). 5. William and Tracy love (their /theirs /they) dogs so much. 6. My car is new, but (her/hers/ she) is old. 7. The teacher told (us/ our/ we) an interesting story. 8. I want to sit between you and (he/him/his). 9. She has an apple in (she/her/ hers) hand. 10. Bob and Ted live near (them/their/they) school.