talent show 
Who won the talent show? By what,dancing or singing?

show off 
The boys always show off their sports skills to the girls.

schoolmate
His schoolmate made the last goal.

volunteer
Many retirees(退休人员) volunteer in community service and day care centers.

How do you choose what movie theater to go to？

Who do you think is the funniest actor？

Last week's talent show was a great success.