Viết dạng phủ định và nghi vấn của các câu sau 1.I went to school yesterday. .................................................................................. ................................................................................. 2.She wrote a letter to her friend. ................................................................................. ................................................................................ 3.My grandfather helped her. .................................................................................. ................................................................................. 4. She wore uniform to work. ................................................................................. ................................................................................. 5. She ate bread for breakfast yesterday. . ................................................................................. 6.We visited Hanoi last summer. . ..................................................................................... 7. They were at school yesterday. ................................................................................ 8. She had noodle for breakfast this morning. ................................................................................ 9. His parents always took them to the zoo. . ................................................................................. 10. Lan and Mai often watched TV in the afternoon .................................................................................