II

1. Many people believe him although he often tells lies

2. Although she was hungry, she didn't eat much

3. He doesn't wear glasses although he is over 60

4. They continued to work although it got dark

5. She kept on study although it was noisy

6. He ate all of the fruits although they were green

7. We could do the test although it was very difficult

8. I'm not afraid of him although he is very strong

9. The plant took off although the weather was bad

10. He didn't stop his car although the traffic lights turned to red

III

1. Tom though well but he will not pass the examination

2. ( hehe xin lỗi câu này mik ko bik:(( )

3. Despite the sky was dark, he took a lot of photographs
4. He studied very well though his hard life
5. They were always admired although living in poverty
6. In spite of he was frequently absent from class, he passed the final examination
7. Despite she has been on a diet for 2 years, she is still fat
8. She spends like a millionare in spite of she doesn't earn much money
9. Despite he went bed early, he didn't finish his homework
10. In spite of you don't like him, remember to treat him well

III. 2. Despite it's a book, it will interest children of all ages. 

P/S: Mấy câu kia bạn kia đã giúp và đúng hết nên mình sẽ ko nói lại.
Chúc bạn học tốt!