1. Tom is saving money. He wants to buy a computer. 

à ​Tom who wants to buy a computer is saving money

2. Mary went to the library. She could borrow some books.

à ​Mary who could borrow some books went to the library

3. We are going to leave early. We don’t want to miss the plane.

à ​We who don't want to miss the plane are going to leave early

4. They went to Paris. They could visit their friend.

à​They whose friend they could visit went to paris

5. My father drove carefully. He didn’t want to cause accidents.

à​My father who didn't want to cause accidents drove carefully

6. She whispered. She would not disturb anyone.

à ​she who would not disturb anyone whispered

7. John gets up early. He doesn’t want to be late for class.

à​John who doesn't want to be late for class gets up early

8. I put the milk in the fridge. It will not spoil.

à​​​I put the milk which will not spoil in the fridge