Język angielski articles ćwiczenia

Napisz brakujące articles 'a' lub 'an' w języku angielskim.
1. Isaac Newton became great scientist.
2. What nice day!
3. What charming person!
4. I have few friends. ("several friends")
5. I have little fortune. ("some money")
6. They cost two pounds dozen.
7. He drove at a speed of seventy miles hour.
8. There is Mr. Brown at the door. I have never seen him before.
9. He was Einstein of his time.
10. Tom will never be Nelson.