用“What”或“How”填空.

用“What”或“How”填空.
1._______ fast the boy runs!
2._______ a good girl!
3._______ well he sings!
4._______ a lovely day!
5._______ an interesting book!
6._______ interesting the book is!
7._______ beautiful the coat is!
8._______ a beautiful coat!