Thesematerialsarethemostimportantr

发布时间：2020-07-10 03:08:14

These materials are the most important records we keep ________ those men's places,time and means of gambling．













A.for












B.on











C.up











D.of

网友回答

D解析考查介词。此题只要看出短语结构keep record of，便可选出
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