问题
I have tried very hard to find a solution to the problem, but in vain —-why not consult with Frank? You see, _________.
A:great minds think alike
B:two heads are better than one
C:a bird in the hand is worth two in the bush
D:it’s better to think twice before doing something
B:two heads are better than one
C:a bird in the hand is worth two in the bush
D:it’s better to think twice before doing something
正确答案是：
