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1. I am a student.

2. My father is not a teacher.

3. Is your aunt a doctor?

4. Are they at home?

5.Are you an engineer?

6.My sister is at work.

7.It is difficult to find a job now.

8.How old are you?

9.I am very sorry about it.

10.They are busy with their report today.

11.Ann is a second-year student.

12.My hobby is drawing.

13.What are you fond of?

14.Three days are long enough for a good holiday.

15.My mother is the only person I can talk to.

16.The students are in the laboratory.

17.Helen is a baby-sister.

18.What kind of film is it? - It is too boring.

19.Is it warm in September?

20.Kates father is a tall man.