21．I didn’t expect to receive a postcard from you! It’s really       my wildest imagination!

       A．behind                 B．beyond                C．except                 D．through

22．—Canada is       colder than China.

       —Are you joking ? It’s       colder!

       A．a little ;more        B．little ;more           C．a little; much        D．little; much

23．—Can we meet tomorrow afternoon?

       —Not in the afternoon ,I’m afraid. I       .

       A．will be working                                   B．am going to work

       C．am about to work                                D．will work