What a fool I was to do such a thing是什么意思?

What a fool I was to do such a thing! What a fool I was to do such a thing是什么意思? she said I had been fool to do such a thing!这句话对吗? It was most stupid to do such a thing i found ()foolish of you to do such a thing what a fool i was to have expected him to help me 可不可以去掉was such a thing was unheard I really don’t know what to ______ about such a thing.A.say I really don’t know what to ____about such a thing. A.say B. the whole thing was such a worry that i began to lose sleep I found _____ foolish of you to do such a thing. —What_________him to do such a silly thing?—I have no idea.