下面的感叹句由How还是What引导？
⑴fat he is!                 ⑵fast she runs!
⑶a lovely dog!              ⑷an interesting film!
⑸nice the food is!          ⑹a good boy!
⑺kind his mother is!        ⑻a nice camera it is!
⑼clever students they are!  ⑽slowly the rabbits run!