Choose the letter A, B, C, or D to indicate the word(s) that best fits the gap in each of the following sentences
1. Zoos can make money for their conservation programmes through___________entrance fees.
A. paying B. raising C. charging D. earning
2. The astronauts have to___________themselves so they don’t float around when sleeping in a spaceship.
A. pull B. push C. keep D. attach
3. A(n) ___________is a piece of rock or other matter from space that has landed on a planet.
A. meteorite B. galaxy C. cluster D. astrolable
4. It is cheaper to build a(n) ___________spacecraft than the one that needs someone to operate.
A. manned B. unmanned C. habitable D. uninhabitable
5. “Why have you changed the channel?” – “I’m not___________Science. I prefer Eco-tourism on Channel 12”.
A. into B. in C. up with D. over
6. An obvious benefit of tourism is that it plays a key role in economic___________.
A. raise B. rise C. to increase D. growth