Some students have trouble grammar while others have difficulty new words.
A. in; remember
B. for; to remember
C. on; remembering
D. with; remembering
网友回答
A. in; remember
B. for; to remember
C. on; remembering
(答案→)D. with; remembering
解析：词语搭配。 “做某事有困难”have trouble with sth, have difficulty (in)doing。 Sth 。 句意：一些学生学语法有困难而其他学生记单词有困难。