问题描述：
英语8.-Have you seen _______ pen?I left it here this morning.
8.-Have you seen _______ pen?I left it here this morning.
-Is it _______ black one?I think I saw it somewhere.
a.a;the b.the;the c.the;a d.a;a
为什么
8.-Have you seen _______ pen?I left it here this morning.
-Is it _______ black one?I think I saw it somewhere.
a.a;the b.the;the c.the;a d.a;a
为什么
问题解答：
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