| 1. Scientists estimate that hydrogen _______________ around 90 to 99 percent of all matter in the universe. | | |
| 2. Scientific knowledge accumulates through _______________ observations of the world around us. | | |
| 3. The first _______________ to show America was made in 1519. | | |
| 4. The fastest _______________ of transportation in London is the Underground. | | |
| 5. Personally, I do not _______________ the death penalty under any circumstances. | | |
| 6. They were able to _______________ from her sad look that she didn't get the job. | | |
| 7. Visiting the wreck of the Titanic on the ocean floor is the _______________ deep sea diving adventure. | | |
| 8. The essay must be _______________ by the end of the month. | | |
| 9. The mayor was _______________ in the newspaper as being against the proposal. | | |
| 10. I'm afraid I won't be able to give you a _______________ answer until we have a bit more information. | | |