Question

【题目】Although we learned English 3 years ago, we still have trouble __the new words.

A. learn B. learning C. to learn D. of learning

Answer 1

【答案】B

【解析】句意：虽然我们3年前学过英语，但我们仍然很难掌握新单词。 A. learn动词，学习；B. learning动名词，学习；C. to learn 动词不定式； D. of learning学习。本题为固定搭配have trouble （in）doing sth., 意为“做某事有困难”。故选：B。