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III/
1. We were having dinner when the telephone rang.
2. We spent two hours repairing the windows yesterday.
3. He detests joining social activities because he is an introvert. 
4. The Hoa ethnic group has the most colourful clothing.
5. My mother likes watching folk music and news on VTV1 channel.

Phần trên ghi đầy đủ đề bài bạn nhé.

II/

6.A horse can run faster than a camel.

7.The internet has been used all over the world.

8.Your house is bigger than mine.

9.Although the girl worked hard,her step mother wasn't happy.

10.The tortoise was running while the hare was sleeping

III/

1.We were having dinner when the telephone rang.
2.We spent two hours repairing the windows yesterday.
3.He detests joining social activities because he is an introvert. 
4.The Hoa ethnic group has the most colourful clothing.
5.My mother likes watching folk music and news on VTV1 channel.