trace

01. The first place finisher was disqualified after [traces] of steroids were found in his urine.

02. Ewan can [trace] his family's roots all the way back to the 15th century in Scotland.

03. The children lay on a huge piece of paper, and the teacher [traced] their forms so they could each then decorate and color the pictures of themselves.

04. Police were able to [trace] the stolen car to a house in the east end of the city.

05. The suspect was arrested after [traces] of cocaine were found in his car and on his clothing.

06. The owners of a local restaurant are trying to [trace] the owner of a diamond ring which was left in their washroom last night.

07. Wow, that picture is great! Did you draw it yourself or did you [trace] it from a book?

08. Jon Bentley once said that brilliance is typically the act of an individual, but incredible stupidity can usually be [traced] to an organization.

09. Eric Hoffer observed that whenever you [trace] the origin of a skill or practices which played a crucial role in the ascent of man, we usually reach the realm of play.

10. Jacob Bronowski once observed that every animal leaves [traces] of what he was; man alone leaves [traces] of what he created.

11. The children [traced] their names in the sand with a stick.

12. [Tracing] the direct effects of the media is a very difficult research task.

13. Horse racing has been popular in England since Roman times, and can be [traced] back to Central Asia among prehistoric nomads.

14. The origin of coffee can be [traced] to East Africa.

15. Star Trek's Mr. Spock had green skin because of [traces] of copper and nickel in his blood.

16. The detective [traced] the footprints from the scene of the crime to the butler's bedroom.

17. A DNA sample was taken from a 10,000-year-old skeleton in England, and then [traced] to a modern-day ancestor still living in the town of Cheddar.

18. Current scientific theories [trace] our first human ancestors to Africa about 5 to 7 million years ago.

19. The earliest date to which fossils can be [traced] is 600 million B.C.

20. The origin of bananas is [traced] back to the Malaysian jungles of Southeast Asia.

21. A Tibetan proverb observes, "We come and go and leave no [trace], like a crow that has taken off from a rock."

22. By [tracing] the phone call, the police were able to pinpoint the location of the man who had kidnapped the rich businessman's daughter.

23. The music of ancient Rome left few [traces], partly because it was deliberately suppressed.