1. It must be pointed out that it is one of our basic State policies to control pulation growth while raising the quality of the population. %QVX1\>]
2. It is (has been) estimated that the world's population could reach 6 billion by the end of the century. f&js,
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3. It must be kept in mind that there is no secret of success but hard work. /wKW
4. It can be seen from this that there is no difficulty in the world we can overcome. ;B^G<
5. As is known man is the product of labour. iPa!pg4m
6. It is a common saying that man who has a settled purpose will surely succeed. ?M;2H{KG:
7. It is clear that the enemy has no desire for peace. Ii?<Lz
8. It is hard to imagine how Edison managed to work twenty hours each day. WT;=K0W6&
9. It's hard to say whether the plan is practicable. yj `b-^$?
10. There is no doubt that you will be helped by others if you have any difficulties. ,1Suq\
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11. It seems certain that they have made a series of experiments. s!9.o_k
12. It is said that bats have been using radar for millions of years. 9FP6Z[4
13. To tell the truth , many mistakes we made could have been avoided. y"]?TEd
14. As we know, it was not until recently that the problem was solved. ^IjKT
15. It must be admitted that you haven't done what you promised to do. XK`>#*"V
16. In my opinion, this computer is different from that one you saw. ivb&J4?y
17. It is certain that we have a long way to go. Cj _Q9/
18. All this shows that nothing can prevent us from reaching our aims. lV?rC z
19. As far as we know, it took him more than a year to write the book. 0<>I\UN0b
20. It has been proved that every substance, no matter what it is, is made up of atoms. Qi&!IG
21. It has been decided that we are going to build a railway whose base must be completed within this year. Ih ;6(5z
22. It is obvious (evident) that the success of the innovation depends on our concerted efforts. .6z#o{n
23. To be frank, whether you like it or not, you have no other choice. }9/30
24. It is natural that one may have trouble expressing complicated ideas in simple English. I?G
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25. What is more important, the agreement they have negotiated is being carried out. (Q o
26. We will be successful as long as we persevere. yc8iT`
27. Frankly speaking, what you call the truth may not apply to things happening here. V()s!w
28. It is true that we must redouble our efforts; otherwise we cannot catch up with the developed countries. >~){KV1~
29. I take it for granted that they will support this idea. I regard it as natural that they will agree to this idea. [<