问题补充:
--- What do you think of the math problem ?
--- It’s very hard and nobody has .
A. put it out
B. helped it out
C. worked it out
D. solve
答案:
A. put it out
B. helped it out
(答案→)C. worked it out
D. solve
解析:句意:——这道数学题你认为怎么样?——我认为非常难,没有人能算出它。worked out算出,put out生产、伸出,help out帮助,solve解决(问题)