His brother wants a black pen 对a black pen 提问 请帮我解说下.His brother wants a black pen 对a black pen 提问请帮我解说下.

问题描述:

His brother wants a black pen 对a black pen 提问 请帮我解说下.
His brother wants a black pen 对a black pen 提问
请帮我解说下.

What does his brother want