1. Choose the correct article:
She is ___ university professor.

2. Which sentence is correct?

3. Fill in the blank:
___ Earth revolves around ___ Sun.

4. Identify the incorrect sentence:

5. Choose the correct article:
I need ___ hour to finish ___ report.

6. Which sentence uses "the" correctly?

7. Fill in the blanks:
She is ___ only child in ___ family.

9. Which article is missing?
___ Himalayas are ___ tallest mountains.