1/ The Thomson family tries to eat healthy meals for a very long time but they find it difficult to keep it up.
2/ Mr. and Mrs. Thomson work long hours at the hospital.
3/ They have three young children.
4/ David is eight.
5/ Because it is difficult for the family to cook healthy meals every day.
6/ David helps them prepare the meals.
7/ ko biết.
8/ At first, they feel so tired, but David helps them prepare the meals, so now they don't feel tired any more.