tìm lỗi sai và sửa

Here are the corrections for the sentences: 1. **D** - "cooking" should be changed to "cooked". Corrected: After Mrs. Wang had returned to her house from work, she cooked dinner. 2. **C** - "catching" should be changed to "caught". Corrected: Jimmy threw the ball high in the air, and Betty caught it when it came down. 3. **D** - "buys" should be changed to "bought". Corrected: Linda has worn her new yellow dress only once since she bought it. 4. **B** - "got" should be changed to "was getting". Corrected: Last week Mark told me that he was getting very bored with his present job and is looking for a new one. 5. **B** - "was sat" should be changed to "sat". Corrected: Having fed the dog, he sat down to his own meal. 6. **D** - "delete" should be changed to "deleted". Corrected: When I turned on my computer, I was shocked to find some junk mail, and I just deleted it all. 7. **D** - "do" should be changed to "have to". Corrected: They are going to have to leave soon and so do we. 8. **B** - "has told" should be changed to "told". Corrected: The boss laughed when the secretary told him that she really needed a pay rise. 9. **D** - "stop" should be changed to "stopped". Corrected: The telephone rang several times and then stopped before I could answer it. 10. **D** - "since ten years" should be changed to "for ten years". Corrected: Debbie, whose father is an excellent tennis player, has been playing tennis for ten years.