11.- Have you seen ___ pen?I left one here this morning .- Is it ___ black one

题目

11.- Have you seen ___ pen?I left one here this morning .- Is it ___ black one
11.- Have you seen ___ pen?I left one here this morning .
- Is it ___ black one I think I saw it somewhere .
B.a ; a D.a ; the
第二个空不应该是特批黑色的那支吗?为什么不选D而选B呢?请详解,

答案

“是一只黑色的钢笔吗”所以用a;
如果回答的人指着桌上的一堆笔中的一支,说“是这只黑色的吗”,那就用the