听下面一段独白，回答以下小题。
1. What can we learn about “prom”?

A．It is a formal celebration．

B．It is held at the start of college．

C．It is a unique American tradition．

2. Where did the “prom” tradition start according to the widely accepted belief?

A．In Canada．

B．In Australia．

C．In the US．

3. Why is “prom” important in students’ lives?

A．It’s a sign of becoming an adult．

B．It’s an opportunity to find a job．

C．It marks the end of their schooling．

4. Who will traditionally pay for the tickets for “prom”?

A．Schools．

B．Students．

C．Parents．