1. Life is too short. Be sure that you have never had any regrets in your life.

2. Be sure that you have never had any regrets in your life which only lasts for a few decades. Laugh or cry as you like, and it's meaningless to oppress yourself.

3. People injecting drugs can never be sure that they're using unadulterated substances.

4. Can we be sure that she's honest?

5. We must be sure that there's a fit between the needs of the children and the education they receive.

6. Whether or not we're successful, we can be sure that we did our best.

7. Be sure that you receive post-test counselling even if the result is negative.

8. But even there it is hard to be sure that there was no ultimate control from the temples.

9. It is important to be sure that your results are not distorted by such factors.

9. Wish you can benefit from our online sentence dictionary and make progress day by day!

10. They did this every time they met to be sure that Jean-Pierre should not lose contact simply by running out of power.

11. Fourthly, from the outset it is important to be sure that there is agreement with the patient about what is planned.

12. Second, how can we be sure that it provides for an accurate and reliable estimate of that population?

13. Always be sure that the lifting kite is stable before thinking about lofting the camera.

14. How can I be sure that an on-line business is legitimate?

15. However, we can not even be sure that it has got the causal effects absolutely right.

16. This was done to be sure that the constipation was and would be adequately treated.

17. But we can be sure that Brezhnev will exert every effort to regain the award when he visits Nixon.

18. Matilda would be sure that any knowledge Isabel possessed was safe as long as Edmund lived.

19. How can we be sure that employers don't use Work Experience to cover for unfilled vacancies?

20. Be sure that each student draws and takes notes on her observations.

21. And who could be sure that such secrets could be kept from the spy network still strong in every dormitory and classroom?

22. You need to be sure that the structure you plan to practice is a genuine structure in the language.

23. Your life only lasts for a few decades, so be sure that you don't leave any regrets. Laugh or cry as you like, and it's meaningless to oppress yourself.

24. Even if the yolk sac is not visible, still be sure that is feeding before parting with your money.

25. Before they could engineer an escape, they had to be sure that none of the guards were suspicious.

26. While he was chief inspector of schools parents could be sure that they had a powerful champion of high standards.

27. Although I did what I could to try to conceive a girl, I couldn't be sure that I had.

28. I can flood the paper using this frame and be sure that once dry it will return to a perfectly flat surface.

29. Even if you are confident that your present arrangements are adequate can you be sure that nothing has been overlooked?

30. At one point she let her shoulder touch Clare's arm, to be sure that he was really there.