Do you have any difficulty ____(study) physics
问题描述：
Do you have any difficulty ____(study) physics
答
Do you have any difficulty (in studying) physics？
have difficulty (in) doing sth.
答
have difficulty doing表示做某事有困难，属于固定搭配，所以空格里应填studying，整句话的意思是你在物理学习中遇到困难了吗
答
studying
have difficulty (in)doing sth 固定词组，意思是：在做某事时有困难。
答
加上一个介词 in
答
studying
have difficulty (in) doing sth. in 可以省略
固定词组,做某事方面有困难
翻译：你在学习物理方面有困难吗
答
填(in) studying
have difficulty (in) doing sth, in可以省略。
答
Do you have any difficulty STUDYING physics ?
== Do you have any difficulty WITH YOUR study OF physics ?