问两道英语题,请各位帮忙.( )31. –Are you going to see the film tomorrow?

问两道英语题,请各位帮忙.
( )31. –Are you going to see the film tomorrow?
---I have no idea. If you don’t, ______.
A. nor shall I B. nor do I C. me, too D. so won’t I
( )32. What would you do if you _____ an alien in the street?
A. meet B. are meeting C. have met D. will meet
能解释更好.