1. I will do my homework tonight.
→ My homework will be done by me tonight.
2. We will grow vegetables in the garden.
→ Vegetables will be grown in the garden by us.
3. Lan and Nam will travel to Ha Noi next summer
→ Ha Noi will be traveled by Lan and Nam next summer.
4. My sister will go to the market tomorrow.
→ The market will be gone by my sister tomorrow.
5. She will sell this bookself.
→ This bookself will be sold by her.
6. They will send a letter for their parent.
→ A letter will be sent to their parent by them.
7. His father will buy a kite for him.
→A kite will be bought for him by his father.
8. The cat will eat her breakfast.
→ Her breakfast will be eaten by the cat.
9. I will bring your food for you.
→ Your food will be brought for you by me.
10. My brother will wash dishes tonight.
→ Dishes will be washed by my brother tonight.
@Sumi