IV. Em hãy đọc kỹ đoạn văn sau, rồi trả lời các câu hỏi bên dưới. (2 điểm) Peter is my pen pal. He is 15 years old. He lives in a house in London. He has lived in London for ten years. He is an excellent student. He always works hard at school and gets good marks. He loves learning Vietnamese in his free time. He often practices writing letters in Vietnamese. Sometimes he helps me to correct my writing, and sometimes I help him to correct his spelling mistakes. Next summer, he is going to visit Ho Chi Minh City with his family. I’m looking forward to seeing him soon. Questions: 17. How old is Peter? 18. How long has he lived in London? 19. What does he love doing in his free time? 20. He is going to visit Ho Chi Minh City next summer, isn’t he? giúp em vs ạ