1. Someone will translate this letter to Vietnamese.

→ This letter will be translated to Vietnamese.

2. Traveling around the city in a day is impossible.

→ It's impossible to travel around the city in a day.

3. Is it all right if I take a photograph?

→ Would you mind if I take a photograph?

4. "Shut the door but don't lock it" she said to us.

→ She asked us to shut the door but don't lock it.

5. Air travel is faster than any other kinds of transport.

→ Air travel is the fastest kind of transport.

6. We haven't seen each other for over two years.

→ The last time we saw each other is two years ago.

7. I would like you to help me move this table.

→ Do you mind helping me move this table?

8. This water was so cold that children could not swim in.

→ The water was not warm enough for children to swim.

9. Mai keeps leaving her pen at home.

→ Mai is continuously leaving her pen at home.

10. She is not only a teacher, she is also a singer.

→ Not only a teacher, she is also a singer.