he is sitting in a bus.改为一般疑问句

问题补充：

he is sitting in a bus.改为一般疑问句

答案：

Is he sitting in a bus?

======以下答案可供参考======

供参考答案1:

IS he sitting in a bus?

供参考答案2:

is前置供参考答案3:

Does he sitting in the bus?

供参考答案4:

问他正在干什么