Question

【题目】The twins were so much alike that we had great trouble ________one from the other.

A. distinguishing B. to distinguish

C. distinguish D. distinguished

Answer 1

【答案】A

【解析】考查固定搭配。have trouble(in)doing sth意为“做某事有困难”。句意：这双胞胎长得很像，我们很难把他们区分开。根据句意可知选A。