10What does your sister do?
11.It's good for your health to do morning exercise every day.
12.It's unhappy to get a bad mark at any subject.
13.It's our duty to keep our school grean,clean and attractive.
14.Because I was ill,I could not go to school yesterday.
15.We don't want to go to school and neither does he.
16.Mary likes to eat ice-cream and so does Peter.
17.It's very sweet soup.
18.How much is this shirt?
19.Because of being tired,he can't finish the work in time.
20.Our summer vacation lasts for two months.
21.She is not a teacher in my class.
22.What is the distance between your house and the market?
23.I'll call Linh if you want.
24.You don't need to set off early.
