They didn't play football with their friend.
Did they play football with their friend?
Yes,they did.
No,they didn't
Who did they play football with?(对 their friend 提问)
What did they play with their friend?(对 football 提问)
They didn't play football with their friend.
Did they play football with their friend?
Yes,they did.
No,they didn't
Who did they play football with?(对 their friend 提问)
What did they play with their friend?(对 football 提问)