题目内容：

they are setting the table for their friends 对划线部分提问 their firends 是划线的
they are setting the table for their friends 对划线部分提问 their firends 是划线的
—— —— （两个空） are they setting the table?

优质解答

For whom
FOR 是介词 后面要跟宾格

追问：

确定吗？