Question

【题目】Almost every teenager will experience a period in their life _____ they aren’t content with their parents．

A. when B. where C. that D. which

Answer 1

【答案】A

【解析】period 作先行词，表时间，用关系词when 来引导。when="during" this period。句意：几乎每个年轻人都会有经历一个时期，在这个时期里，他们对父母不满意。