Continuing the theme, some more true or false

Here are a few questions which are related to today’s date,

1. True or false, MCMXCIX is the Roman numeral for 1999.
2. True or false, Morecambe and Wise reached number 2 in the UK Singles Chart in 1975 with The Trail of the Lonesome Pine.
3. True or false, Gavrilo Princip assassinated US President William McKinley.
4. True or false, a margay is a small monkey native to Madagascar.
5. True or false, “Turned cartwheels ‘cross the floor” is a line from Queen’s Bohemian Rhapsody.

Good luck! I will post the answers later today.