24. It is natural that one may have trouble expressing complicated ideas in simple English.
25. What is more important, the agreement they have negotiated is being carried out.
26. We will be successful as long as we persevere.
27. Frankly speaking, what you call the truth may not apply to things happening here.
28. It is true that we must redouble our efforts; otherwise we cannot catch up with the developed countries.
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