问题
选择题
Some students have trouble grammar while others have difficulty new words．
A．in；remember
B．for；to remember
C．on；remembering
D．with；remembering
答案
答案：D
题目分析：考查句型have trouble with sth和have difficulty in doing sth 并且in可以被省略。意为：做某事有困难。句意：一些学生学习语法有问题，而另一些学生记单词有困难。根据句意选D。