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> _____, I think, and the problems could be settled. [ ] A. If you double your efforts B. A bit more efforts C. Making greater efforts D. So long as you keep up your spirits

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发布时间：2024-09-10

_____, I think, and the problems could be settled.
[     ]
A. If you double your efforts
B. A bit more efforts
C. Making greater efforts
D. So long as you keep up your spirits

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