河南成教 / 大学英语4
正确率：100%
4[单选题]
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
You _ _ _ _ _ _ _ _ him about this since he could find out for himself.
参考答案：