Question

【题目】__________ it was getting darker, they were still playing tennis on the playground.

A. Because B. Since C. If D. Although

Answer 1

【答案】D

【解析】句意：虽然天变得更黑了，他们仍然在操场上打网球。Because 因为，引导原因状语从句；Since自从，引导时间状语从句；If如果，引导条件状语从句；Although虽然，尽管，引导让步状语从句。根据句意可知两句话是转折的关系，这里是让步状语从句，故选D。