He drank a lot of milk when he was ill.(对划线部分drank a lot of milk 提问)

He drank a lot of milk when he was ill.(对划线部分drank a lot of milk 提问)
He drank a lot of milk when he was ill.(对划线部分drank a lot of milk 提问)

He drank a lot of milk when he was ill.(对划线部分drank a lot of milk 提问)
What did he do when he was ill?
\(^o^)/~

What did he drink when he was ill?