What will a person do with these?
send invitations
What is she doing?
choosing the music
What is he doing?
serving drinks
What is she doing?
going shopping
What are they doing?
cleaning the furniture
What did the students do?
make a poster
What did they do?
put out the food
What is she doing?
sweeping the floor
What is he doing?
blowing up balloons
What is this person doing?
selling tickets
What is he doing?
making a cake