A, an, the (2).

1. When is your birthday? - My birthday is (on) 1st May.
2. Do you remember your mother's birthday? - Yes, I do.
3. His uncle is generous and her aunt is very kind.
4. That man is very clever. His book is recognized by a lot of people.
5. They know our address.
6. Their son speaks English very well.
7. My cousin's dog is small. Its hair is curly.
8. Is this a watch?- No, it isn't a watch, it's a pen.
9. This pen is good, and that pen is bad.
10. I can see the pencil on your table, but I can't see any paper.
11.Give me the chair, please.
12. They have a dog and two cats.
13. I have a spoon in my soup plate, but I have no soup in it.
14. My friend says he is going to be a millionaire one day.
15. Would you like oranges?
16. Mr Smith is an artist. Mrs Smith is a poetess. She is not a singer.