谁帮我看看这篇英语作文有没有错误.
问题描述：
谁帮我看看这篇英语作文有没有错误.
Yesterday was Monday.Mary was time to on duty.When she was sweeping the floor.she found a watch on the floor .Then she picked up the watch and went to the teacher's office.Marytook out the watch to the teacher ,The teacher said Mary was a good student.
答
Mary was time to on duty 改为 It was Mary's turn to be on duty
其他都很好,