1. To meet him again is a pleasure. => It is a pleasure to meet him again.

2. Studying Maths is interesting. => I find it interested to study Maths.

3. He left the house early this morning. => I saw him leave the house early this morning.

4. While Jane was having a bath, Peter came to visit her. => Jane was having a bath when Peter came to visit her.

5. John went to bed after he had finished his report. => John had finished his report before he went to bed.

6. It's advisable for Bob to work harder for the exam. => Bob is advisable to work harder for the exam.

7. She was made to type these letters before 5 p.m yesterday. => The boss made her type these letters before 5 p.m yesterday.

8. Before going out, we had turned off all the lights. => Before we went out, we had turned off all the lights.

it is pleasure to meet him again