A few days ago,Mary said to Sara,"I must finish this experiment this week.” 改为间接引语
问题描述：
A few days ago,Mary said to Sara,"I must finish this experiment this week.” 改为间接引语
答
A few days ago,Mary told Sara that she must finish that experiment that week.
楼上的朋友回答有小小失误.
顺便回答一下追问：此句中,must无须变时态的!
我是初中英语老师,如果还有问题 ,