Viết lại câu sao cho nghĩa không thay đổi: People plant rice in those fields

Viết lại câu nghĩa của câu không thay đổi:
1, People plant rice in those fields
Rice
2, They use cars and trucks to carry food to market
Cars and trucks
3, Did you do your test ferfectly?
Was
4, Why didn't you learn the lesson?
Why