. Research findings show we spend about two hours dreaming every night, no matter what we ____ have done during the day. 

   A. should          B. would             C. may                   D. must

Research findings show we spend about two hours dreaming every night, no matter what we ____ have done during the day

1. A.
   should
2. B.
   would
3. C.
   may
4. D.
   must

 Research findings show we spend about two hours dreaming every night, no matter what we ______ during the day.

  A. should have done                                      B. would have done

  C. may have done                                         D. must have done

. Research findings show we spend about two hours dreaming every night, no matter what we ____ have done during the day. 

   A. should          B. would             C. may                   D. must

Research findings show we spend about two hours dreaming every night, no matter what we     _________during the day.

A. may have done          B. could do         C. must have done          D. would do