1. Do more exercise           if            you want to lose weight.

      2. I have a lot of homework to do this evening,      so          I don’t have time to watch the football match.

      3. Eat more vegetables,           and       you will feel healthier.

      4. Take up a new hobby        and         you’ll have some new friends.

      5. Eat more fish,            and     you will be smarter.

      6. He has toothache           so            he still eats a lot of sweets and cakes.

1.if;2.so;3.and;4.and,5.and;6.but