Fill in the blanks with the right words or phrases. Change the form where necessary. 1. We usually ________ questionnaires to conduct a survey. 2. The results of the survey only apply to the population of which this group is ____________. 3. We should _________ the factual results and our understanding of the results. 4. How can you _________ you will accomplish it? 5. This result of the survey has more than one _________. 6. This passage __________ those who want to conduct a survey but don’t know how to start. 7. ________, we must survey the entire population. 8. Sometimes we should ________ the confidence or accuracy after the survey. 9. There is a lot of preparation to be made before we can _________ a survey. 10. Damage is much greater than it was at first _________.