企源知识库

Some people who are successful language learners find it difficult to _______ in other fields.
A、succeed
B、result
C、achieve
D、score
【正确答案】：A
【题目解析】：本句为带有修饰主语的定语从句的主从句，而在主句中缺少的不定式与定语从句中的successful相呼应。