strike the iron ____ it is hot.A when B while

strike the iron ____ it is hot.A when B while
strike the iron ____ it is hot.A when B while

strike the iron ____ it is hot.A when B while
B
趁热打铁
表示“时间段”,用while
请在客户端右上角评价点“满意”即可,

wnafj irwrhjs nmkf3we

答案：
when
（习语）打铁要趁热。