改反意疑问句 请尽快~They have gone to Shanghai ( ) ( Bob ca

问题补充：

改反意疑问句,请尽快~They have gone to Shanghai,( ),( Bob can clean his room himself,( ),(

答案：

haven they?

can he?

======以下答案可供参考======

供参考答案1:

haven they?

can he?