10. |
Cosmic rays are highly energetic particles, and when they collide with atoms, they (send, sent) other particles, such as neutrons, flying off in all directions. |
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11. |
In 1955, a riot (break, broke) out at an Elvis Presley concert in Jacksonville, Florida. |
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12. |
Although he could not think of an explanation, he refused to (give, gave) his assent to the project. |
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13. |
After the sandstorm the lens aperture was clogged with dirt, so we couldn't (take, took) pictures of the destruction. |
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14. |
Does chocolate compel you to (break, broke) your diet? |
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