If you won't eat a lot, you mightn't put on weight. 1-b
If your parents may be tall and thin, you might be tall and thin too. 2-a
If you will not use up much energy, your body will store the food as fat. 3-e
If you won't need all The food you eat, you will not need to eat so much. 4-d
If you will diet a lot, you won't look your best. 5-c