There are some books and pens on the table.对主语进行提问 应该是What's on the table?还是what are there on the table?还是两种都可以呢

问题描述:

There are some books and pens on the table.对主语进行提问 应该是What's on the table?
还是what are there on the table?还是两种都可以呢