Across
- 3. v. to put something behind
- 4. v. to move along by turning over and over
- 6. v. to make something full
- 7. The _____ brothers invented the ballpoint pen.
- 9. The Biro brothers' ballpoint pen is a simple ___________.
- 10. adj. having very short distance between top and bottom
- 11. They filled the tube with ______.
Down
- 1. When people write with a ballpoint pen, the tiny ball rolls along the _______.
- 2. The ________ pen is small, have many colors, and people use it every day.
- 5. prep. by the length of; next to
- 8. A ________ is put over the tube.
- 10. There was a ______ ball at one end of the tube.
