What are they going to do?
They're going to go skiing.
What's she going to do?
She's going to do kung fu.
What's she going to do?
She's going to go rollerblading.
What's he going to do?
He's going to go surfing.
What's she going to do?
She's going to play tennis.
What's he going to do?
He's going to play baseball.
What's he going to do?
He's going to go rock climbing/climb the mountain.
What's he going to do?
He's going to go mountain biking.
What are they going to do?
They're going to play football.
What's she going to do?
She's going to go swimming.
What's he going to do?
He's going (to go) skateboarding.
What are they going to do?
They're going to dance/do ballet.
What's she going to do?
She's going to go cycling.
What's he going to do?
He's going to go sailing.
What are they going to do?
They're going to play beach volleyball.
What's she going to do?
She's going to do yoga.
What's he going to do?
He's going to play basketball.
What are they going to do?
They're going to go ice skating.