1. Evaporation ____ the process by which a solid or liquid ____ into vapour by heat.
2. Dramatic changes have been taking place in the United States _____ .
3. As the decade ____ to wind down, Mark Morris ____ as our centurys youngest great choreographer.
4. Of the many attempts that ____ to regulate language one way or another, very few ____ .
5. In the past few months, our company director ____ more mettle than most industrialists ____ in an entire career.
6. Chinas economic boom ---- a growing need for energy that ---- only foreign supplies.
7. They hope that by surrounding city centres and likely terrorist targets with "soft walls", they it impossible for hijacked planes ---- anywhere near them.
8. New DNA evidence hints that "African Eve", the 150,000-year-old female ancestor of every person on Earth, ---- in Tanzania or Ethiopia.
9. Socrates ---- that we ---- with the improvement of our souls.
10. He ---- in a line of work that was dependent solely on his ability to win the trust of others, and one in which very close relationships ---- necessary.