填介词She said she had a really hard time ___science this semester.为什么?补充问题：with,in,at在修饰课程（如science,math）时,有什么不同?

分类: 作业答案 • 2021-12-20 03:29:52

问题描述：

填介词She said she had a really hard time ___science this semester.为什么?
补充问题：with,in,at在修饰课程（如science,math）时,有什么不同?

答