there is (a soccer ball and a basketball) on the floor.括号提问_____ _____ _____ on the floor

问题描述:

there is (a soccer ball and a basketball) on the floor.括号提问
_____ _____ _____ on the floor

what is on the floor?

What is on the floor?
记住,无论是什么,只要是对表语(be动词后)提问,都用What is,不能用别的