31. Helen _____ busy every day, but her brother ____.(A) doesn’t ; does(B) don’t ; do(C) can be ; do

問題詳情

31. Helen _____ busy every day, but her brother ____.
(A) doesn’t ; does
(B) don’t ; do
(C) can be ; doesn’t
(D) is ; isn’t.

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)