Question

【题目】In a sport's team, each player has a clear role, and there are few occasions __________ members are confused or uncertain of their roles.

A. which

B. that

C. when

D. how

Answer 1

【答案】C

【解析】句意：在一个运动队中，每个队员都有明确的角色。几乎没有队员对他们的角色感到困惑或不确信的场合。分析句子可知occasions后跟定语从句，因关系词在定语从句中作状语，故用关系词when。