24、Not until he failed in the examination _______ Cliff ______ the importance of careful preparation.
A.had; realized B.did; realize C.was; realized D.has; realized
科目:高中英语 来源: 题型:
Not until he failed in the examination _______ Cliff ______ the importance of careful preparation.
A.had; realized B.did; realize C.was; realized D.has; realized
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