18. All this shows that nothing can prevent us from

　　reaching our aims.

　　19. As far as we know, it took him more than a year to

　　write the book.

　　20. It has been proved that every substance, no matter what

　　it is, is made up of atoms.

　　21. It has been decided that we are going to build a

　　railway whose base must be completed within his year.

　　22. It is obvious (evident) that the success of the

　　innovation depends on our concerted efforts.

　　23. To be frank, whether you like it or not, you have no

　　other choice.

　　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.

　　29. I take it for granted that they will support this idea.

　　30. In a certain sense, a successful scientist is a person

　　who is never satisfied with what he has achieved.

　　31. The oceans do not so much divide the world as unite it.

　　32. There is no denying the fact that the new management

　　method has greatly increased the production.

　　33. There is no denying the fact that the new management

　　method has greatly increased the production.

　　34. Upon hearing the unexpected news, he was so surprised that he couldnt utter a word.

　　35. As the saying goes, nothing in the world is difficult for one who sets his mind to it.

　　36. Our goal must be attained. Our goal can unquestionably be attained.

　　37. Noting can prevent us from realizing the four modernizations.

　　38. Now in China, more and more families can afford to buy

　　high-grade goods, such as washing machines, TV sets, video

　　orders.

　　39. No matter how difficult English may be, you should do

　　your best to learn it.

　　40. It can be said that without knowledge of science and

　　technology, it is impossible to build socialist modernizations.