摘要： Dr. Frank failed many times but he finally to find a successful way to solve the problem. A. broke off B. broke up C. broke down D. broke through
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Dr. Frank failed many times but he finally _________ to find a successful way to solve the problem.
| A．broke through | B．put up | C．picked out | D．gave away |
Dr. Frank failed many times but he finally _________ to find a successful way to solve the problem.
A．broke through B．put up C．picked out D．gave away
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. Dr. Frank failed many times but he finally _______ to find a successful way to solve the problem.
A. broke off B. broke out C. broke down D. broke through
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