Nowadays, more and more teenagers have difficulty________maintaining friendship.

游客2023-09-29  15

问题 Nowadays, more and more teenagers have difficulty________maintaining friendship.

选项 A、for
B、on
C、in
D、at

答案 C

解析 have difficulty in doing sth为固定搭配,意为“做……有困难”,故本题答案为C。
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