8.Could __ have been ____ who helped Sunny get her work done?
问题描述：
8.Could __ have been ____ who helped Sunny get her work done?
A.they ,it
B.they ,them
C.it,them
D.it,they
为什么不是其他选项?尤其是C?
答
改为肯定句为 It could have been they who helped Sunny get her work done.是强调句.如果该成It was they who helped Sunny get her work done.应该可以看出来了吧!(去掉强调的It was...that...应为一个完整的句子...