1 .
1. The company is ______ everyone to save power and water.
2. I want to thank you for offering such useful advice ______ my research.
3. You may cultivate this awareness ______ through reflection or prayer.
4. The software ______ protect computers from being attacked by viruses.
5. When it ______ market research, a company should collect and analyse information about what people want and need.
6. Their life’s work is our security and the freedom that we ______ often take for granted.
7. The stadium was named ______ the club’s first chairman.
8. It took them a long time to ______ how to start the equipment.
9. The novel is the fastest-selling paperback ______ and has sold more than 70 million copies worldwide.
10. All the old buildings were pulled down to ______ a new housing project.