21. --John, when shall we meet again, Thursday or Friday?
---________. I`ll be off to London then.
A. Either B. Both C. Neither D. None
22. Before you quit your job , ______about your future .
A. thought B. thinking C. to think D. think
23. ----Tom has made great progress recently.
----____and____.
A. So he has; so have you B. So he has; so you have
C. So has he; so have you D. So has he; so you have
