1. I saw your school's advertisement in the Tuoi Tre newspaper yesterday.

2. I am interested in learning English and I would like some information about your school. 

3. I've studied English for over four years but I want to improve my speaking and listening skills.

4. Could you tell me some details about the courses and the fees?

5. I'm looking forward to hearing from you soon.

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1. I wish my friend had a computer.

2. He used to have a lot of money.

3. It's 2 years since I last visited Ho Chi Minh Mausoleum.

4. Mai said she must come to the party the next day.

5. Mr. John suggested Mary that she should complain to the company.

Dear Sir,

1. I saw your school's advertisement in Tuoi Tre Newspaper yesterday.

2. I am interested in learning English so I'd like more information about your school.

3. I've studied English for over four years but I want to improve my speaking and listening skills.

4. I will be very grateful if you send me details of courses and fees.

5. I am looking forward to hearing from you soon.

Your sincerely.

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1. I wish my friend had a computer.

2. He used to have a lot of money, but now he doesn't.

3. It is 2 years ago we haven't visited Ho Chi Minh Mausoleum.

4. Mai said that she had to come to the party the following day.

5. Mr. John suggested that Mary should complain to the company.