Teachers are aware of difficulties of the problems.
很高兴为你解答!
老师祝你学习进步!
请及时采纳哦!多谢你的问题!^_^
teachers/be aware of /difficulties of 越简单越好.
Teachers are aware of difficulties of the problems.
很高兴为你解答!
老师祝你学习进步!
请及时采纳哦!多谢你的问题!^_^