They thought about it for a long time, but still could not a solution.
A. e over
B. e along with
C. e out
D. e up with
网友回答
A. e over
B. e along with
C. e out
(答案→)D. e up with
解析:A过来,(从远处)来到;横过;越过B随同;和……一起来 C出现,出版,结果是,D提出,想出办法,建议。句意:他们想了很长时间,但是仍然不能想出解决方法。