What great difficulty they had a living in old days

you can't imagine what（）great difficulty we have had working out such （）difficult problem 这里两个空要填什么冠词,difficulty可数吗 What a great what a great vacation what great they are! What a great museum! what great museum!意思 What a great museum! learning it well is difficult and needs great eff 是what a great future还是what great future what is more difficult 的用法,造句 what is more difficult句式用法造句 改错:what a great weather? What a great weather .改错 what great news it was! 译What a great difference! difficult what a great fun/what great fun为什么不可以用how great fun 是how great fun还是what great fun