We have ..... (pick up) litter to help keep the streets clean.
picked up
My cousin has ..... ( give) blood at the hospital to help people in need.
given
I have never ....... (volunteer) to serve food for homeless people, but I think it is a good idea!
volunteered
Have you .......... (plant) trees in your neighborhood?
planted
Have you ever ..... (write) a thank-you note to someone who has helped you in the past?
written
Have you ever .......... (donate) clothes to those in need?
donated
Have you ever ......... (raise) money for charity?
raised
