问题补充:
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:
A. in; remember
B. for; to remember
C. on; remembering
(答案→)D. with; remembering
解析:考查trouble固定结构。Have some trouble with sth;have some trouble in doing sth做某事有困难。句意:一些学生在语法方面有困难,而其它学生在记忆新单词方面有困难。故D正确。