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

A．How

B．What

C．How an

D．What an

2 . ____great progress you have made! Your mother must be satisfied with you .

A．What a

B．What

C．How a

D．How.

3 . —— Hurry up! It’s time to leave.
—— Ok, _______.

A．I’m coming

B．I’ll come

C．I come

4 . Don't give up, Tom. You haven't realized ______ great progress you've made!

A．what

B．what a

C．how

D．how a

5 . —   ________ 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

6 . ----Dad, do you like my picture?
----_______________! It’s the nicest one I’ve ever seen!

A．What beautiful

B．How careful

C．How wonderful

D．What wonderful picture