19.  David Beckham was banned from driving, but shortly afterwards he got his driving license back ........... it was safe for Beckham to drive in his own car.
 
      1.which broke the law  
      2.because the judge said that   
      3.in addition to social practice  
      4.even if against the traffic law  
  

20.Unless the plant gets enough water for its root to absorb, it will soon ........... .
 
      1.delete  
      2.omit  
      3.erase  
      4.perish