―Tom，would you please come and help us with the computer at the meeting tomorrow?

一I am sorry, but I       then．

       A．would have class                                         B．will be having class

       C．was going to have class                               D．am about to have class

 —Tom，would you please come and help us with the computer at the meeting tomorrow?

  一I am sorry, but I then.

A. would have class               B. will be having class

C. was going to have class        D. am about to have class