Mọi người giúp mình nha mình đang cần gấp làm ơn

Bài 3: 1. had left

2. had lived

3. had never been

4. had finished

5. hadn't finished

6. had eaten

7. had listened

8. had finished

9. had been

10. Had you met

11. had forgotten

12. had prepared

13. had not rained

14. had not played

15. had not eaten

Bài 4: 1. They live in the desert.

2. It stores food in its hump.

3. Because they do not want to be warm during the day and the fat all over an animal's body keeps the animal warm.

4. Because the nights are cool.

5. Because the winters are cold in Central Asia.