Question

【题目】—Mike looks unhappy. What’s wrong?

—It seems that he has some trouble __________ a problem.

A.to solve B. solving C. solves

Answer 1

【答案】B

【解析】

试题分析：句意：---麦克看起来很不高兴。怎么啦？---似乎他解决这个问题有一些困难。此题考查固定短语have trouble doing sth做某事有一些困难。根据句意，应选B。