There are two pens on the desk.对画线部分提问
问题描述：
There are two pens on the desk.对画线部分提问
其中画线的部分是Two pents,下列选项中正确的是：
What is on the desk?
What are on the desk?
感激不尽.
答
What is on the desk?因为疑问词作主语,谓语通常用单数.Thanks