=>

1. If you had done what I told you, you wouldn't have got lost.

2. The flight had to be cancelled because of the horrible storm.

3. It will not be necessary for you to go to the meeting tomorrow.

4. How does it take you to fly from Hanoi to Bangkok?

5. The boy was so fat that he couldn't run far.

6. He'll lose his job unless he works harder.

7. What is his date of birth?

8. Who does this bag belong to?

9. The film is not as good as the one I saw last week.

10. My father told me never to borrow money from friends.

1, You got lost because you didn't do what I told you 

-> If you had followed my instructions,you wouldn't have got lost

2,They cancelled all the flights because of the horrible   storm

-> All the flights were cancelled because of thehorrible  storm.

3, You won't have to go to the meeting tomorrow

-> It will not necessary for you to finish the work to day.

4,How long was your flight from Hanoi to Bangkok?
->How long did you take from hanoi to Bangkok?

5, ->The boy was very so fat and he couldn’t run far.

6, If he doesn't work harder, he'll lose his job.

-> Unless he works harder,he'll lose his job

7,When is your birthday?

->What is your date of birth

8, Whose bag is this? 

->Who's this bag belong to?

9, The film I saw last week was better than this one.

->The film is better than the one I saw last week.

10,''Never borrow money from friends'' , my father said.

-> My father tole me never to borrow....