21.-John, when shall we meet again, Thursday or Friday?
-___________.I’ll be off to London then.
A. Either B. Neither C. Both D. None
22.-kevin,you look worried. Anything wrong?
-Well, I____ a test and I’m waiting for the result.
A. will take B. took C. had taken D. take
23.______to work overtime that evening, I missed a wonderful film.
A. Having been asked B. To ask C. Having asked D. To be asked
