Em hãy chọn một trong 3 phương án sau 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.