(2011年南京模拟)People begin to know that most environmental problems exist because necessary measures for preventing them________taken in the past.
A.are not B.were not
C.hadn’t been D.wouldn’t be
科目:高中英语 来源: 题型:
(2011年南京模拟)What a pity!All his property,the books,the pictures and the house,________consumed by the big fire.
A.were B.was
C.had been D.have been
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