The fireman saw the fire.The fireman began to fight against the fire.(合并成一句)— — the fire,the fireman began to fight against it。(两个空格

问题描述:

The fireman saw the fire.The fireman began to fight against the fire.(合并成一句)
— — the fire,the fireman began to fight against it。(两个空格

The fireman saw the fire and began to fight against it .

The fireman began to fight against the fire after seeing the fire.

The fireman saw the fire and began to fight against it.