— Have you seen pen? I left one here this morning.— Is it black one? I think I saw it some

— Have you seen pen? I left one here this morning.
— Is it black one? I think I saw it somewhere.
A. the; the
B. a; a
C. the; a
D. a; the

A. the; the (答案→)B. a; aC. the; aD. a; the解析：考查冠词用法。两个空缺处均是泛指，且都是以辅音因素开头的单词，故答案选B。

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