It’s raining. Please take orange raincoat on the desk with you when you go out.A. a B. an

问题补充：

It’s raining. Please take orange raincoat on the desk with you when you go out.

A. a B. an C. The

答案：

解析：句意：天正下雨。你出去的时候请把桌面上那件橙色雨衣带上。介词短语 on the desk作定语修饰 raincoat ，特指桌面上的那件橙色雨衣。故选C。