234 Grammar and Language Workbook, Grade 6Copyright © by Glencoe/McGraw-HillMechanics
dec. 12. I used Sarah Boone’s invention this morning.
int. 13. Didn’t she design the first ironing board?
int. 14. What is your favorite invention?
dec. 15. I couldn’t get along without a library card.
dec. 16. Philo Farnsworth invented television in 1930.
int. 17. Do you think Farnsworth would like The Simpsons?
dec. 18. The first popular comic strip, Hogan’s Alley, appeared in 1895.
dec. 19. The first zippers replaced buttons on high-button shoes.
int. 20. Did it take a long time to button those shoes?
dec. 21. Sometimes it took as long as fifteen minutes.
exc. 22. Whew, that’s a long time!
dec. 23. Long ago, people bathed with a mixture of ashes and water.
dec. 24. Then they applied oil or grease.
dec. 25. Finally they rinsed with clean water.
imp. 26. Try it sometime to see if it works.
exc. 27. My goodness, what a strange way to get clean!
dec. 28. Actually, the chemicals in ashes and grease are similar to those in modern soap.
dec. 29. Early people probably got themselves quite clean.
imp. 30. Compare that method with the one we use today.
imp. 31. Think of William Addis the next time you brush your teeth.
dec. 32. The history of the toothbrush is very interesting.
dec. 33. William Addis invented the toothbrush in 1770.
dec. 34. He bored a hole in a small piece of bone and glued in some bristles.
exc. 35. What a clever man Addis was!
dec. 36. If it weren’t for him, we’d still be cleaning our teeth with rags.
dec. 37. Someday somebody might invent a machine that turns off gravity.
exc. 38. Hey, that would be fun!