题目内容
Although we have learned English for 3 years, we still have trouble _____ the new words.
A. learn B. to learn
C. learning D. of learning
C
【解析】
试题分析:句意:虽然我们学英语学了三年,但在学新单词是仍有困难。have problem/trouble/ difficulty (in) doing sth 表示“做……有困难”, 故选C。
考点:考查非谓语动词。
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