問題詳情
【題組】28.
(A) Some giant industrial polluters have gone out of business.
(B) More environmental organizations have appeared.
(C) Many toxic sites in America have been cleaned up.
(D) More branches of her company have been set up.
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)