Do you know what_____the fire?这是填 caused 现在时 cause 为什么不可以?表示

Do you know what_____the fire?这是填 caused 现在时 cause 为什么不可以?表示 Do you know what we are working for?为什么for不可以省略? what cause the fire?what do you see just now? Do you know what c___ the fire What_____the twins_____(do)now? do you know what（ ）（ cause）the traffic accident Do you know what cause the level of the seas Do you know -------- when there is a fire? ____he change his mind ,please do me know.为什么选A啊,B什么不可以 英语.补充为什么、What do you like for lunch?为什么用For at 不可以么? What,when,do,know,you,do,to.fire,there is,a连词成句 翻译I will wait for you.Cause I don't know what else i can do.