高二英语定语从句专练
  
  1.This is all          I know about the matter.
     A.  that B. what C. which  D. whether
  2.This is the job       they laughed.
     A.  which   B. that  C. at that  D. at which
  3.Beihai Park is one of the most beautiful park       built about 300 years ago in Beijing.
     A. which , was B. where, were  C. that, were   D. that , was