I.
1. The little girl was made to go to bed in time by her mother.
2. If she weren't ill, she could go to school today.
3. My sister has learnt English since she was six years old.
4. The car was too expensive for my dad to buy.
II.
1. They drove so fast that they escaped the police car that was chasing them.
2. John gets on well with that partner whose name I can't remember.
3. The colder it is, the hungrier I get.
4. Although I have been afraid of math, I always try to learn math really hard.