the boy‘s sister is (fine).对括号内的词提问.我还有几道题1.Are these my friends' books?(作否定回答）2.His son likes to play football (in the aftarnoon)对括号内的词提问3.He has a big bag.(变为复数句）

the boy‘s sister is (fine).对括号内的词提问.
我还有几道题
1.Are these my friends' books?(作否定回答）
2.His son likes to play football (in the aftarnoon)对括号内的词提问
3.He has a big bag.(变为复数句）

How is the boy's sister.
祝楼主学习进步,不懂再问~~~~~~

No,they aren't
what time does his son like to play football
He has big bags