| 1. It takes the human eyes an hour to __________ completely to seeing in the dark. | | |
| 2. Japanese scientists have __________ 3,000 pharmaceutically active substances from marine animals and plants. | | |
| 3. Harrisons' is the __________ distributor in our area, so we have to buy from them whether we want to or not. | | |
| 4. The website covers __________ such as water safety and basic first aid. | | |
| 5. The earth is a __________ planet which has been forever changing throughout time. | | |
| 6. Slave trading in the United States was __________ in 1808, and by 1820 it became a crime punishable by death. | | |
| 7. Every house on this block looks __________; same style, same colours, same middle class family living in it. | | |
| 8. The human body is __________ more complex than the most complicated machine. | | |
| 9. The __________ of dark beer with chocolate produces a wonderful taste. | | |
| 10. Jennifer is a __________-trained ballet dancer. | | |