A．It is a time for Americans to celebrate the end of summer.B．It’ s common for American workers to demonstrate on the day for better working conditions and pay.C．Its celebration involves a lot of outdoor parties.D．It marks the beginning of a new school term.
A．It is a time for Americans to celebrate the end of summer.
B．It’ s common for American workers to demonstrate on the day for better working conditions and pay.
C．Its celebration involves a lot of outdoor parties.
D．It marks the beginning of a new school term.