Exercise 10: Choose the best answer to complete each of the following sentences: 1. We're best friends as we have a_____ interest in music. A. passion B. passionate C. passionately D. passionateness 2. I think that our school volunteer activities are very______ A. excite B. excited C. exciting D. excitement 3. Digital camera is a wonderful______ A. invention B. inventor C. inventv D. invented 4. Thank you very much for your_____ teaching materials. A. use B. useless C. using D. useful 5. There are some kinds of____ who work for disadvantaged children in Viet Nam. A. volunteer B. Volunteers C. voluntary D. voluntarily 6. People often use the _____world as inspiration for their inventions. A. natural B. nature C. naturally D. natures 7. Idol is one of the mos ______entertainment formats ever launched. A. success B. succeed C. successfully D. successful 8. The local authority is carrying out some activities for community _____ A. develop B. development C. developing D. developer 9. Acupuncture is an ancient Chinese _____technique for relieving pain, curing disease, and improving general health. A. medicine B. medically C. medical D. medicals 10. The_____ is the moment of blood inside the body. A. circulation B. circulate C. circulative D. circulating