What's he going to do?
He's going to play basketball.
What's she going to do?
She's going to do yoga.
What's he going to do?
He's going (to go) climbing/ to climb the mountain.
What's he going to do?
He's going (to go) skateboarding.
What are they going to do?
They're going to play board games.
What are they going to do?
They're going to do gardening.
What are they going to do?
They're going to play football.
What's she going to do?
She's going (to go) cycling.
What are they going to do?
They're going to do the cleaning.
What's she going to do?
She's going to play tennis.
What's he going to do?
He's going (to go) surfing.
What are they going to do?
They're going (to go) skiing.
What's she going to do?
She's going (to go) swimming.
What is he going to do?
He's going to play the guitar.
What is he going to do?
He's going (to go) hiking.
What is he going to do?
He's going (to go) fishing.
What are they going to do?
They're going (to go) ice skating.