have to +> must

with => to

for => to

to seeing => to see

convenience => convenient

1. Letters in the office are typed by Mary.

2. You will be helped by his father tomorrow.

3. Human life has completely been changed by science and technology.

3. This bottle was broken by Peter.

5. English is being learnt in the room.

6. My mind cannot be changed.

7. I had not been told about it.

8. Her telephone number is not known by me.

9. The chilren will be brought home by my students.

10. A present was sent to me last week.

1. In spite of being a poor student, Tom studied very well.

2. Although Tom was offered good salary, he gave up his job.

3. Despite the cold weather, we go out in the evening.

4. Despite the fact that she behaves unkindly, we still love her.

5. Despite the traffic jam, they went to the post office.

Thank you for your letter about asking me my study results.

I received the first semester report last week.

I got good marks in Math and Literature.

I still need to improve my listening and speaking skill in English.

I am going to visit Hue Citadel with my family next summer vacation.

I hope you will visit Hue some day.

I will send you many postcards and photographs of Hue.

Write to me soon and tell me all your news.

1. Last year, I was bad at E.

2. My teacher told me to work harder to improve my English.

3. I listen to the cassettes and practice speaking English with my friends.

4. My teacher said that he was happy because I made progress in E.

1. The Buffalo-fighting festival took place in DS last Sunday.

2. The cultural heritage of the ethnic peoples in Viet Nam is very rich. 

3. What are the positive and negative sides of the Internet?

4. The elder brother was surprised, so he asked his brother to explain. 

5. Students mustn't be noisy and run in the school building.

The Buffalo-fighting took place in DS last Saturday.

 The cultural heritage of the ethnic peoples in Viet Nam is very rich.

What are the positive and negative sides of the Internet?

The elder brother was surprised, so he asked his brother to explain. 

Students mustn't be noisy or run in the school building/

1. am going to sit

is going to start

am going to complain

are meeting

am teaching

is exploding

is going to go

are having

musnt't 

happily

have to

lived

going

old enough to participate in this club.

intent on buying a new computer.

to walk to school when they were young.

dangerous to leave medicine around the house.

me not to spend too much of my time playing games.

did the homework by myself.