21．—What about _____ conference you attended last week?

—To tell the truth, it was too boring, you know, _____ conference like that.    

A．a; the    B．the; / C．the; aD．the; the

22．－I’m too busy to go to the cinema with you, John.

－__________ The film is said to be a very good one.

A．That’s all right. B．I apologized.  

C．What a pity!  D．It doesn’t matter.