| 1. Everyone at my office hates each other, which makes the _______________ really uncomfortable. | | |
| 2. Columbus had three ships on his first American _______________. | | |
| 3. The first standardized system of _______________ was developed in Mesopotamia around 4,700 years ago. | | |
| 4. All of a sudden, Henry _______________ from the room, and then we heard him vomiting in the bathroom. | | |
| 5. The Beatles did most of their final recording _______________ in the studios of Abbey Road. | | |
| 6. Because the sun is so far away, its _______________ arrive at Earth travelling almost parallel. | | |
| 7. There have been a number of _______________ births in my family history. My mom is a twin herself. | | |
| 8. We don't have enough memory on the computer to install any more _______________ on it. | | |
| 9. In geological terms, Mars represents an intermediate phase in _______________ development which is transitional between a body like the moon and our own Earth. | | |
| 10. The historic notebooks in which Marie and Pierre Curie recorded their _______________ on radium nearly a century ago are still radioactive. | | |
| 11. All of the nation of Mali can be _______________ as hot and dry. | | |
| 12. Namibia produces large _______________ of diamonds, lead, zinc, tin, silver, and tungsten. | | |
| 13. The game completely _______________ all my energy, so I was too tired to do much afterwards. | | |