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32. Some buildings that were destroyed and heavily damaged in the earthquake last year were constructed in violation of the city's building code.
(A) Some buildings that were destroyed and heavily damaged in the earthquake last year were
(B) Some buildings that were destroyed or heavily damaged in the earthquake last year had been
(C) Some buildings that the earthquake destroyed and heavily damaged last year have been
(D) Last year the earthquake destroyed or heavily damaged some buildings that have been
(E) Last year some of the buildings that were destroyed or heavily damaged in the earthquake had been
OG10里的问题,这道题的答案为什么是a呢?请前辈帮忙解释,谢谢. | 
