摘要:I need one more stamp before my collection . A.has completed pletes C.has been completed D.is completed 析:complete是及物动词.“邮集 是被人完成的.须从表被动意的C.D中选择.又因before等引导的时间状语从句中谓语要用一般现在时表将来.所以此题答案为D.

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