题目内容：

you are clever.you work out the difficult problem in such a little time .合并为一句
------- ------- --------- you to work out the difficult problem in such a little time (横线里填上3个单词）

优质解答

【 It is clever】 you to work out the difficult problem in such a little time.
不明白的再问哟,请及时采纳,多谢!