问题补充:
It could be learned from the teachers eyes he was very satisfied with her performance.
A. that
B. whether
C. what
D. where
答案:
(答案→)A. that
B. whether
C. what
D. where
解析:答案:A。考查主语从句。句意:从老师的眼里可以看出老师对她的表演很满意。分析句子结构可以看出,前面的it为形式主语,真正的主语为that引导的主语从句,that无意义,不作成分,但是不能省略。