It was five o’clock in the afternoonthey arrived at the hotel[来源:]Asince B．before C．that

问题补充：

It was five o’clock in the afternoonthey arrived at the hotel[来源:]

A．since B．before C．that D when

答案：

解析：When 引导的是时间状语从句，意思是：“他们的到家的时候”，同学们容易把它看成强调句而误选C。如果是强调句应该在five o’clock 前加at.