a.

1) to buy

2) to be

3) to study

4) to give

5) getting up

6) to check

7) drinking

b.

2. If we had a bigger house, I wouldn’t share a bedroom.

3. She would be healthier if she did some exercise.

4. We wouldn’t be lost if we had a map.

5. If he didn’t talk so quickly, I would understand him better.

6. What would you buy if you won lots of money.