vì sơ đồ mạch điện gồm đèn 1 nối tiếp đèn 2 nên I1=I2=Imạch=0,15A

viết lại câu và sử dụng mệnh đề quan hệ không xác định 1. She sent letters to me. These letters were not delivered to me. 2. I met a woman. Her son is a student in my class. 3. We have visited Hanoi. Hanoi is the capital of Vietnam. 4. Nobody can find the boy. He has been lost since January. 5. He looks very angry with his daughter. She is wearing a short and red skirt. 6. We don’t know how to solve this problem. It makes us stressed. 7. My father has sent some cakes. He made them. 8. Why don’t you want to eat this ice-cream? She spent a lot of time doing it for you. 9. There were a lot of people at the party. I had known many of them for years. 10. There are 14 girls in my class. A few of them are my friends. 11. He was carrying his belongings. Many of them were broken. 12. He had thousands of books. Most of them he had read. 13. He picked up a handful of stones. One of them was sharp. 14. I have collected a lot of foreign stamps. But none of them is from Japan. 15. They have made friend with a number of foreigners on Facebook. But none of them is from Thailand. 16. Samuel Johnson was the son of a bookseller. Samuel Johnson was born in 1709. 17. Mr Kemp teaches physics in Bonton University. He is going to retire next year. 18. Yesterday I met a woman named Susan. Her husband works in London. 19. A doctor examined me last Friday. He was really kind. 20. Dublin is the capital of Ireland. It is my favourite city. 21. This is the swimming-pool. I used to go swimming there.