1. He has conducted surveys on the use of mobile devices by students since 2004.

2. The Facebook experiment was conducted for one week in 2012.

3. The security review and testing will be conducted and completed during August 2017.

4. The survey was conducted during March and April 2013.

5. The study was conducted over seven weeks through May 5.

6. The country conducted a second ICBM test on July 28.

7. The research was conducted from December 2015 to January 2016.

8. The North previously conducted atomic bomb tests in 2006,2009 and 2013.

9. RightScale conducted the survey in January 2015.

10. These are conducted not just through email but through phone and social media as well.

11. The two companies have already conducted a bunch of experiments together over the past year.

12. She later conducted the experiment with her lawyer using what had become her own new breathalyzer.

13. The study was conducted between April and June of last year.

14. He said the new force would conduct operations similar to two conducted earlier this year.

15. The finds are evidence of the metal trade that was conducted during this period.