问题
选择题
31. ________was difficult to save 
the places and buildings _____destroying their old beauty.
A．That…unless
B．This…except
C．It…without
D．There … except for
答案
答案：C
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31. ________was difficult to save the places and buildings _____destroying their old beauty.
A．That…unless
B．This…except
C．It…without
D．There … except for
答案：C