| 1. During the _______________ period of the Mayan civilization, the great city of Tikal thrived in dense lowland jungle of what is now part of Guatemala. | | |
| 2. The Earth is a _______________ planet which has been forever changing throughout time. | | |
| 3. People in this generation need to be able to _______________ to change quickly because of the dynamic nature of technological change in modern society. | | |
| 4. I like to remind my ESL students that the vocabulary we learn is never _______________: there is always another meaning, another part of speech, another thing we can learn from a new word. | | |
| 5. The genetic material of humans and chimpanzees is 98% _______________. | | |
| 6. Fatima and Oscar make a lovely _______________. | | |
| 7. There are over 200 satellites orbiting Earth _______________ for the purpose of private communications services, such as pagers, telephones, and computers. | | |
| 8. Beach fires are _______________ during the summer months due to the fire hazard. | | |
| 9. He injured himself while hiking in an _______________ area of the province and died because he couldn't get the proper medical care in time. | | |
| 10. American bartenders say they hear more complaints about work than any other _______________. | | |