I need one more stamp before my collection______ .

admin2013-05-15  18

问题 I need one more stamp before my collection______ .

选项 A、has completed
B、completes
C、has been completed
D、is completed

答案D

解析 我只需再多一张邮票就能完成收藏了。本题考查动词形式。A选项语态不对;B选项因complete常用作及物动词也不妥:C选项因句中有before用完成时没有必要,故选D。
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