1. It's a long time since he last called me.

He hasn't called me for a long time.

2. When did he get the job?

How long ago did he get the job?

3. I advise you to book a table in advance.

If I were you, I would book a table in advance.

4. I don't want to tell them the secret.

I would rather not tell them the secret.

5. If I improved my English speaking skill, I would easily get that job.

Were I to improve my English speaking skill, I would easily get that job.

6. We wanted to get good seats so we arrived early.

In order to get good seats, we arrived early.

7. It took her nearly an hour to do the crossword.

She spent nearly an hour doing the crossword.

8. The policeman made him confess after three days.

He was made to confess by the policeman after three days.

9. Nga finds Maths easier than Physics.

Physics is not as easy as Maths for Nga.

10. I advise you to see a doctor.

You ought to see a doctor.