题目内容：

this is tom ,it is ( )pen
A.black his B.his a black C.his black D.a his 选择

优质解答

this is tom ,it is ( his 他的 )pen
不明白的再问哟,请及时采纳,多谢!

追问：

A.black his B.his a black C.his black D.a his

追答：

C it is his black pen . 是他的黑色的钢笔

追问：

为什么不是B呢？

追答：

B 中的 his 和 a 冲突