Bài 4: Mỗi câu sau có 1 lỗi sai, em hãy tìm và sửa lỗi sai đó:
29. Did he invited you to his birthday party?
30. They will build sandcastles in the beach.
31. How did you get there? – I went on underground.
32. We took a lot of photo at the party.
33. She often go swimming with her friends at the weekend.
34. I always have big breakfast before I go to school.
35. She lives in her grandparents in a small village.