21．—Would you like another cup of coffee?
—_____．
A．Yes, I like some B．Yes, I’d like to C．Yes, go ahead D．Yes, please
22．I don’t think she will come to the meeting on time,?
A．do I B．do you C．will she D．won’t she
23．I simply couldn’t understand how it _____ that you did so much work within such a short time．
A．came about B．came back C．came up D．came along
24．—Do you have ___ trouble finishing the work?
—The work is not so difficult as you think． We have finished it already．
A．much B．any C．some D．no