Is that a white table先做否定回答再变成负数句子 They’re our pen friends变单数句子

Is that a white table先做否定回答再变成负数句子
No,it isn't.
Are those white tables
They’re our pen friends变单数句子
She's/ He's my pen friend.
不明白的再问哟,请及时采纳,多谢 !