tianyaguke1968
1. unsolved Great Books deal with the persistently unsolved problems of human life . There are genuine mysteries in the world that mark the limits of human knowing and thinking.2. open How much any of this matters , however , is an open question. 3. unfathomedAt last , we advance some unfathomed problem and prospect foreground of cast-in-place piles.
guaziqiaqia
The question is too difficult to solve （或者 to work it out）The question is so difficult that I can't solve it （或者 I can't work it out）
樱桃小胖子O
the question is too difficult to answer=it is too hard to answer zhis question=the question is so difficult that i cannot answer it=this is such a difficult question that i cannot answer it大概就这些了吧question和answer连用，也可以换成problem和solve连用
优质英语培训问答知识库
