what caused it?和what happend 的区别

what caused it?和what happend 的区别 what caused the civil war? what caused 等不等于what happened?dance to 麻烦造个句, It is not exprcted —— he said caused so much discussion at the meetingA.that B.what that C.what D.that what选什么 为什么 what is it…和what it is…区别 what It is 和 what is It 一样吗 what is it和what is it一样么? what it This factory ( ) produced paper was closed yesterday because it had caused too much pollution.This factory ( ) produced paper was closed yesterday because it had caused too much pollution.A.which B.where C.it D.what我在A和B纠结, 如何区分What time it is?和What's time?和What如何区分What time it is?和What's time?和What the time? what is it 和what is this的区别是什么? what day is it?和 what is the date What are the important reasons that caused the American Revolution? another one?what caused the accident this time? It takes what it What caused the accident and who was responsible for it ? a mystery nowA remains B remain C remained D is remained答案是B，为什么？ The fihancial crisis and the the saffering_ has caused have a great influence on the whole world.A.they B.it C.which D.what Never ever should we forget about the war in Iraq and the sufferings---caused to the people there.a.it b.which c.that d.what