11. _____ earthquake which happened in March, 2011, is _____ great disaster to Japan. It needs a long time to recover from it.
A. The; a B. An; a
C. An; the D. The; the
12. —Were you busy last weekend?
—Very. Rather than _____ time playing cards as usual, I devoted every effort to _____ an advertisement.
A. waste; make B. wasting; making
C. to waste; make D. a waste of; making
