The teacher asked mike :"who is on duty?"改写句子

问题描述:

The teacher asked mike :"who is on duty?"改写句子
The teacher asked mike _____ ____ _____duty.
这是初三的英语习题里面的.
我看到有一个老师给的答案是:to be on
他的错了吧?

who was on
直接引语变间接引语时一般时态也要变化