1- Hoa is preparing her lesson at the moment.
Her lesson is being prepared by Hoa.

2- My mother will give a new dress for her daughter tonight.
A new dress will be given to her daughter by my mother tonight.

3- Do morning exercise every day or you will be fat.
If you don't do morning exercise every day, you will be fat.

4- She gets a bad mark because she is lazy.
If she wasn't lazy, she wouldn't get a bad mark.

5- Nobody in my family is as tall as my brother.
My brother is the tallest person in my family.

6- Ha Noi is more crowded than Lao Cai.
Lao Cai is less crowded than Ha Noi.

7- Mai has a best friend sister. Her house is in the country.
Mai's best friend sister's house is in the country.

8- Mai and her cat are rescued. They have lost their way in the forest for two days.
Mai and her cat, who have lost their way in the forest for two days, are rescued.

9. We have very little money. We are happy.
In spite of having very little money, we are happy.

10. My foot was injured. I tried to walk to the nearest village.
Although my foot was injured, I tried to walk to the nearest village.