Đáp án:

Part 1:

1. 1. Pollution can make headaches light.
2. 2. Dean wanted to know if aliens could communicate verbally.
3. 3. Mercury is the smallest planet in our solar system.
4. 4. He phoned his mother to ask what she was doing then.

Part 2:

1. 1. Minh said that he was doing his homework then.

2. 2. Tom said that the group was working on their project then.

3. 3. My mum said that they would invent a smart cooker that year.

4. 4. When the tornado came, she was working in the field.

5. 5. While I was cooking, my mom knocked the door.

6. 6. We met a relative of yours.

7. 7.Mi is a friend of mine.

8. 8. Although it was raining heavily, Kathy still decided to go to school.

9. 9. We should protect endangered species.

10. 10. If people cared more about the environment, they wouldn't keep making it worse

Giải thích các bước giải:

1. "Light can make headaches pollution." - This sentence doesn't make sense in English. It seems to be a jumbled phrase.

2. "Aliens wanted to know if Dean could communicate verbally." - Người ngoài hành tinh muốn biết liệu Dean có thể giao tiếp bằng lời nói hay không.

3. "The smallest planet in our solar system is Mercury." - Hành tinh nhỏ nhất trong hệ mặt trời của chúng ta là Sao Thủy.

4. "He phoned his mother to ask what she was doing then." - Anh ấy gọi điện cho mẹ để hỏi cô ấy đang làm gì vào thời điểm đó.
   Phương pháp: tìm SUBJECT, VERB, NOUN 
   
   Part 2
   - sử dụng cấu trúc : S + said/ said to me/ told me + that + S + V (qk)
   - Sử dụng cấu trúc:
   While + S + was/were + V-ing, S + V2/ed.
   When+ S + V2/ed, S + was/were + V-ing,
   
   - One of + tính từ sở hữu + danh từ số nhiều = a/an + danh từ số ít + of + đại từ sở hữu