問題詳情

518. We should use energy-saving light bulbs and reusable bags,____ are good for our Earth.
(A) both of whom
(B) and both of them
(C) and both of which
(D) both of them

參考答案

答案：B
難度：困難0.333333
統計：A(2),B(7),C(0),D(10),E(0)