Question

【题目】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

Answer 1

【答案】C

【解析】

试题句意: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。