choose the best exclamative structure

1. _____wonderful hair she has! So long and shiny.

   1.   ?    What a
   2.   ?    How
   3.   ?    What

2. I really didn't know_______difficult it was to play the harp.

   1.   ?    What
   2.   ?    How
   3.   ?    What a

3. Didn' I tell you _______fun we had at Ann's party. Everybody was there.

   1.   ?    how
   2.   ?    what
   3.   ?    what an

4. ___________interesting novel! I really couldn't stop reading

   1.   ?    What a
   2.   ?    What an
   3.   ?    How

5. When you know_________incredible prices they have at Pepe's, you will go nowhere else,

   1.   ?    what
   2.   ?    how
   3.   ?    what an

6. ________nasty ! She kept us waiting for more than an hour.

   1.   ?    What an
   2.   ?    How
   3.   ?    What