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_____, I think, and the problems could be settled.

A. If you double your efforts         B. So long as you keep up your spirits

C. Making greater efforts            D. A bit more efforts

19. _____, I think, and the problems could be settled.

A. If you double your efforts

B. So long as you keep up your spirits

C. Making greater efforts

D. A bit more efforts

_____, I think, and the problems could be settled.

A. If you double your efforts

B. So long as you keep up your spirits

C. Making greater efforts

D. A bit more efforts

_____, I think, and the problems could be settled.

A. If you double your efforts     B. So long as you keep up your spirits

C. Making greater efforts        D. A bit more efforts

 _____, I think, and the problems could be settled.

A. If you double your efforts

B. So long as you keep up your spirits

C. Making greater efforts

D. A bit more efforts

_____, I think, and the problems could be settled.

A. If you double your efforts

B. So long as you keep up your spirits

C. Making greater efforts

D. A bit more efforts

____, I think, and the problems could be settled.     

  A. If you double your efforts   B. So long as you keep up your spirits

  C. Making greater efforts      D. A bit more efforts