Complete the sentences with " a, an, the"

1. ______ knife over there is sharp. Don't touch it!

2. ______ Kinh love other ethnic groups in VN.

3. They live in ______ north-west mountainous regions.

4. There is ______ exhibition of ethnic women'costumes tomorrow.

5. I can't forget ______ delicious dinner I had with my uncle and my aunt last week.

6. She took ______ hamburger and ______ apple, but shw didn't eat _____apple.

7. A boy and a girl are arguing over there. I think I know ______ boy.

8. My grandfather sent me ______ letter and _____ gift but I haven't received ______ letter.