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问题: 一道高三语法题

Michelle, what you’re saying really worries me. How come you ______ me about him before ?
A. didn’t tell B. don’t tell
C. haven’t told D. will tell

为什么选A,不选C,有before不通常都用完成时吗?

解答:

How come意思是“竟然”,一般有before就要用完成式,这里情况不同,“告诉他”是过去的事情,和“现在”没有联系,所以是过去式~选A.