Complete the sentences with a, th or or.

Решение:

1. A spacecraft is believed to have crashed in the desert.
2. A coelacanth was thought to be extinct species.
3. Big Ben is in the capital city of England.
4. Some say Yeti lives on Mount Everest.
5. Residents of Phoenix saw UFOs in 1990s.
6. A sound known as the 'Taos Hum' was first heard in 1990s.