大全39

39. According to a ruling by the state supreme court, the owner of polluted land is liable for the cleanup of the property even if the owner did not have the responsibility that pollution occurred before the title changed hands.

(A) the owner did not have the responsibility that pollution

(B) the owner is not responsible for pollution that

(C) it was not the owner’s responsibility that pollution would have

(D) the responsibility of the owner is not that pollution（B）

(E) the responsibility was not the owner’s that pollution would have

答案B没有问题，只是想问问the title changed hands.如何理解好？谢谢！

     就是说土地所有权易主

(B) the owner is not responsible for pollution that

请问，b选项的“is”这个时态怎么理解？为什么不能用过去时？

is liable for