You ______her at the beginning, but now it is too late.(本题2.0分)<br> A、 ought to have refused<br> B、 ought to refuse<br> C、 ought have refused<br> D、 needn’t refuse

You ______her at the beginning, but now it is too late.(本题2.0分)
A、 ought to have refused
B、 ought to refuse
C、 ought have refused
D、 needn’t refuse

出自：延安大学大学英语4

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