-I have tried very hard to find a solution to the problem, but in vain -why not
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－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
试题答案
答案：B