im-: mobile, moral, personal, practical, il-: legitimate, literate, logical, ir-: rational, regular, relevant, replaceable, in-: appropriate, capable, coherent, competent, hospitable, un-: attractive, do, helpful, official, dis-: agree, continue, embark, honest,

* Negative prefixes (EF Adv 7A)

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恢復自動保存: ?