1 . There are twelve months in a year
2 . Lan's sister isn't as intelligent as Lan
3 . He takes care of sick people
4 . Are you interested in listening to music ?
5 . What does your mother do
6 . Our summer vacation lasts for two months
7 . Will you please take care of the house while we are away ?
8 . American students have more vacations than Vietnamese ones
IV)
1 . How does she go to school everyday ?
2 . What are you having for breakfast ?
3 . How many boys and girls are there in our class ?
4 . What time does your brother get up ?
5 . How are they traveling to work ?