(91)1.Not only ___ polluted but ___ crowded.
      A.was the city; were the streets  
      B.the city was; were the streets
      C.was the city; the streets were  
      D.the city was; the streets were
(92)2.So ___ that no fish can live in it.
      A.the lake is shallow
      B.shallow the lake is
      C.shallow is the lake
      D.is the lake shallow
(94)3.Little ___ about his own safety, though he was in great 
      danger himself.
      A.does he care
      B.did he care
      C.he cares
      D.he cared
(95)4.___ for the free tickets, I would not have gone to the
      films so often.
      A.If it is not
      B.Were it not
      C.Had it not been
      D.If they were not






