the fire breaks out he is the first to arrive at the scene.A. Every time whenB. MomentC.

问题补充：

the fire breaks out，he is the first to arrive at the scene.

A. Every time when

B. Moment

C. No matter whenever

D. Every time

答案：

A. Every time when

B. Moment

C. No matter whenever

D. Every time

解析：D

解析句意为：每一次发生火灾，他总是第一个到达现场。every time用作连词，引导时间状语从句。