1. Which country is hamburger's hometown?
2. Which country's national flag has a 6-point star?
3. Where is the final race of a Formula 1 season?
4. Which country does the Greenland Island belong to?
5. Where is Facebook's founder's hometown?
6. Which foot does Neil Armstrong step first to the surface of the Moon?
7. When did the Challenger spaceship explode?
8. Which country does Alaska originally belong to(before it's being owned by the USA)?
9. Which game company produced "Piano Tiles 2"?
10. What is Singapore's symbol animal?
1.Texas
2.China
3.singapore
4.denmark
5.America
6,Right leg
7. 28-01-2016
8.Russia
9.Umoni Studio
10.Merlion
Only question 4 is correct