1. Lai Van Sam who is a journalist in VTV, is famous for hostng the TV show " Who want to be a billionaire"  
2.More trees should be planted to protect the environment.
3. Although the government has invested a lot , the air pollution is still a major concern .

1. Lai Van Sam is a journalist in VTV. He is famous for hosting the TV show Who wants to be a billionaire. (Using Relative clause) 1 điểm Exercise 3. Rewrite these sentences: 2. People should plant more trees to protect the environment. (Turn into Passive voice) 1 điểm Exercise 3. Rewrite these sentences: 3. In spite of the fact that the government has invested a lot, the air pollution is still a major concern. (Using Although) 1 điểm Exercise 3. Rewrite these sentences: 4. The grammar lesson was delivered by my teacher. (Turn into Active voice) 1 điểm Exercise 3. Rewrite these sentences: 5. Do you still remember the day? We first met on that day. (Using Relative adverb)
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