问题补充：
—I have tried very hard to find a solution to the problem, but in vain.
—Why not discuss with Frank? You see, .
A. two heads are better than one
B. a bird in the hand is worth two in the bush
C. it’s better to think twice before doing something
D. great minds think alike
答案：
(答案→)A. two heads are better than one
B. a bird in the hand is worth two in the bush
C. it’s better to think twice before doing something
D. great minds think alike
解析：这是一组对话。上文，我很努力的去寻找这个问题的解决办法，但是徒劳无益。下文，为什么不和Frank讨论一下？你知道，集思广益。two heads are better than one集思广益；a bird in the hand is worth two in the bush众鸟在林，不如一鸟在手；it’s better to think twice before doing something
三思而后行；great minds think alike 英雄所见略同。
