Question

【题目】If you don't understand something, you may research, study, and talk to others you work it out.

A. because B. though C. until D. since

Answer 1

【答案】C

【解析】

句意：如果你不理解某件事实，你可以调查、研究、跟别人交流直到你做出来。because因为，引导原因状语从句；though尽管，引导让步状语从句；until直到…时候，引导时间状语从句；since自从；既然。根据句意可知，这里表示“直到…时候”，故应选C。