问题
选择题
All I have learned about the exam____ that three students faileD.
A. is B. are C. will be D. have been
答案
答案：A
本题的主语显然是all,但这里不是指人，而是指考试信息，谓语用单数。
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All I have learned about the exam____ that three students faileD.
A. is B. are C. will be D. have been
答案：A
本题的主语显然是all,但这里不是指人，而是指考试信息，谓语用单数。