EX 1. Find mistake (s) in each sentence and correc it. (Tìm lỗi sai và sửa. Các con nhớ chép đề nhé) 1. My friend and I was at the hairdresser’s yesterday. A B C D 2. Last summer, we involved in community service in our neighborhood, so A B C we did go on holiday. D 3. Did your father worked in a tobacco factory before he retired? A B C D 4. Why you did come to the meeting last week? A B C D 5. My best friend and I use to hate each other when we first met. A B C D 6. Was Anna be successful with her project last week? A B C D 7. Yesterday morning, I readed several chapters of the book “The little A B C D prince”. 8. My sister used to had long hair but now she has short hair. A B C D 9. I enjoy to ride my bike to school. A B C D 10. Nam is my classmates. He watches TV every night. A B C D