LOOK!The firemen (put out) the big fire.

问题描述:

LOOK!The firemen (put out) the big fire.

are putting out
look 现在进行时的标志,put要双写t加ing。

Look,the firemen have putted out the big fire,

LOOK!The firemen (are putting out) the big fire.
firemen是fireman的复数,要用are
look表示【看!】说明正在进行
用现在进行时

are putting out
因为是LOOK,所以用现在进行时,又因为firemen是复数,所以用are,put要双写t加ing。