1. _______ Beijing you see today is quite ______ different city from what it used to be.

   A. The; /           B. /; the        C. The; a           D. A; a

2. To help myself get to sleep, I have tried several ways but it seems that _______works.

A.nothing          B.none          C.neither          D.all

3. I will accept late work, ________I will reduce the grade by 5%.

  A. while            B. so           C.but            D. if

4. ---Mary 1ooks down today.What is up£¿

  ---Well£¬_________happened between Mary and me is none of your business£®

  A.wherever              B.whoever     C.whatever       D.no matter what