In English there are three articles: a, an, and the. Articles are used before nouns or noun equivalents and are a type of adjective. The definite article (the) is used before a noun to indicate that the identity of the noun is known to the reader. The indefinite article (a, an) is used before a noun that is general or when its identity is not known. There are certain situations in which a noun takes no article.
 
For example, if I say, "Let's read the book," I mean a specific book. If I say, "Let's read a book," I mean any book rather than a specific book.

1. I want ____ apple from that basket.

2. ____ church on the corner is progressive.

3. Miss Lin speaks ____ Chinese.

4. I borrowed ____ pencil from your pile of pencils and pens.

5. One of the students said, "____ professor is late today."

6 Eli likes to play ____ volleyball.

7. I bought ____ umbrella to go out in the rain.

8. My daughter is learning to play ____ violin at her school.

9. Please give me ____ cake that is on the counter.

10. I lived on ____ Main Street when I first came to town.

11. Albany is the capital of ____ New York State.

12. My husband's family speaks ____ Polish.

13. ____ apple a day keeps the doctor away.

14. ____ ink in my pen is red.

15. Our neighbors have ____ cat and ____ dog.