

Complete these sentences with the correct form of the words in brackets.
1. Do you believe in the ......................... of UFOs? (exist)
2. UFO is an ......................... flying object that has been recognized as a possible or actual alien spacecraft, (identify)
3. I find her story about UFOs hardly ......................... (believe)
4. She is an ......................... teacher. She has great skill at teaching. (experience)
5. Environmental pollution has led to the ......................... of many species of plants and animals from our planet, (disappear)
6. The United States government has record of thousands of UFO ......................... including photos, (sight)
7. The exact origin of the universe remains a ......................... (mysterious)
8. I think UFO are just the ......................... of some people, (imagine)
9. This is really ......................... news! (marvel)
10. Is there any ......................... for the existence of life on other planet? (evident)
1. Do you believe in the ......................... of UFOs? (exist)
2. UFO is an ......................... flying object that has been recognized as a possible or actual alien spacecraft, (identify)
3. I find her story about UFOs hardly ......................... (believe)
4. She is an ......................... teacher. She has great skill at teaching. (experience)
5. Environmental pollution has led to the ......................... of many species of plants and animals from our planet, (disappear)
6. The United States government has record of thousands of UFO ......................... including photos, (sight)
7. The exact origin of the universe remains a ......................... (mysterious)
8. I think UFO are just the ......................... of some people, (imagine)
9. This is really ......................... news! (marvel)
10. Is there any ......................... for the existence of life on other planet? (evident)