I.1 It isn't necessary to finish the work today

- You don't need to finish the work today.

2 Sally finally managed to get a job

- Sally finally succeeded in getting a job.

3 That's the last time i go to that restaurant

- I certainly not going to that restaurant again.

4 " I advise you to take a holiday," the doctor continued

- You'd better take a holiday.

5 If you don't rest yourself you really will be ill

- Unless you rest yourself or you really will be ill.

6. I should like someone to take me out to dinner.

- What I should like is to be taken out to dinner.

7. Martin may not be very well but he still manages to enjoy life.

- Martin's poor health can't prevent him from enjoying life.

8. They'll have to take the dog on holiday with them.

- They can't leave their dog behind when they go on holiday.

9. My aunt got heavily stressed because her marriage broke up.

- The break-up of the marriage made my aunt heavily stressed

10.1 can't believe that he passed the exam.

- I find it hard to believe that he passed the exam.

11. This is the fastest way to get to the city center.

- There is no faster way  than this to get to the city center.

12. If anyone succeeds in solving the problems, it will probably be him.

- He is the most likely person to succeed in solving the problems.

13. We arrived too late to see the first film.

- We didn't arrive early enough to see the first film.

14. "Would you mind not smoking in here?"

- I'd rather you didn't smoke in here.

II.

1. This is the fastest way to get to the city center.

- There’s no faster way than this to get to the city center.

2. If anyone succeeds in solving the problems, it will probably be him.

- He is the most likely person to succeed in solving the problems.

3. We arrived too late to see the first film.

- We didn’t arrive early enough to see the first film.

4. “Would you mind not smoking in here?”

- I’d rather you didn’t smoke in here.

5. He wrote the letter in two hours.

- It took him 2 hours to write the letter.