I.
1. Mr Hai eats dinner very close to the bedtime, so he usually has stomach problems
2. My dad has a lot of carved eggs, but he has never sold any of them
3. Clean your bed room more regularly or you will get a breathing problem
II.
1. It is a good idea to eat different kinds of fruit and vegetable every day
2. My brother doesn't like ice -skating beacause he thinks it is dangerous