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2/
1. Jimmy fell off his bike, but he was unhurt.
2. You should wear a hat, or you will get sunburnt.
3. Tom phoned and he left a message.
4. He washed the car and he polished it.
5. I search for information and I play games on my computer.
6. Computers are important, but they can be dangerous too, so we must be careful.
7. I want to be fitter and healthier, so I eat more fruit and vegetables.
8. You don't wear a sun hat, so you have a sunburn.
9. You may have an allergy, so be careful with what you eat and drink.
10. Tom has a temperature and a sore throat.
11. You don't wash your hands very often, so you are catching flu.
b/
1. he got good marks.
2. she eats a lot of vegetables.
3. she will feel tired
4. I go to bed immediately
5. she doesn't have money