1． ________it is to jump into a river on a hot summer day!

A．How fun       B．What a fun      

C．What fun     D．How a fun

2．How ________ the music sounds to me!

A．relaxed       B．relaxing       

C．relaxingly       D．relaxedly
3．Don’t you think you’ve spent too much time ______ playing computer games? Why not spend more time ___ something useful?

A．in ;on        B．in; in       

C．on; in       D．on; on