21£®—Will you go to attend the party tonight £¿

   —No£¬                £®

      A£®even if invited                       B£®unless being invited

      C£®if invited                              D£®until invited

22£®—Do you mind if I open the window?

      —              I feel a bit cold£®

      A£®Of course not                     B£®I’d rather you didn’t£®

      C£®Go ahead£®                       D£®Why not?