The research mainly deals with the difficulty the students h

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/05/20 12:48:57

The research mainly deals with the difficulty the students have ______ their
attention on their study all thetime.
A.tofocus B.to be focused C.focusing D.focused
为什么

the students have是前面省略了that的定语从句,修饰the difficulty 的,去掉不看,就是：
The research mainly deals with the difficulty focusing attention on their study all thetime
difficulty和focus是主动关系,用现在分词
这份研究主要是解决学生们在学习中（能否）专心的困难

The research mainly deals with the difficulty the students h The passage deals mainly the passage mainly deals with中文意思 The lecyure mainly deals with the trouble young children hav The lecture mainly deals with the trouble young children hav The photos are mainly taken by the students.对吗? the branch of linguistics that deals with syntax and morphol This article deals with the natural phenomenon which_most in 英语翻译The sixth chapter deals with luminescence spectroscopy.W This article deals with the natural phenomena which are most what do you think the book deals with? physics deals with the forces acting on concrete objects