They were under the table just now.改为否定句,一般疑问句,肯定句

问题描述:

They were under the table just now.改为否定句,一般疑问句,肯定句

否定句:They weren't under the table just now.
一般疑问句:Were they under the table just now?
肯定回答?:Yes,they were.