1 . ________exciting it is to swim in the sea while it is hot!

A．How

B．What

C．How an

D．What an

2 . _____ day it is!   -Let’s go out and enjoy the sunshine.

A．How windy	B．How wet
C．What a lovely	D．What a rainy

3 . —   ________ invention the wheel is!
— I can’t agree more. It is an invention that changed the world.

A．What a useful

B．How useful

C．What a useless

D．How useless