选择题：[单选题,7.1分] You ________ him about this since he co

题目内容：

[单选题,7.1分] You ________ him about this since he could find out for himself.

A.needn.t tell
B.need tell
C.need have told
D.needn.t have told

参考答案：【答案仅供学习，请勿对照自行用药等】

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