1. _______ the last two years, the total cost has been reduced by 19 percent.
A.To compare with     B.Comparing to     C.Comparing with     D.Compared with

2. Thinking about the fact that I was not prepared well enough, and _______ to lose my face, I gave up this year’s civil service exam.
A.didn’t want         B.not wanted        C.not wanting        D.not to want

3. If _______, I’ll show the committee what I have found out about the matter.
A.permitting          B.being permitted    C.permitted          D.having permitted