Can they _________ a tent?
set up
I'm not so good at ________ (to build) fires.
building
Can she _____ (to speak) English? - Yes, she can.
speak
I am a lousy _______ (cook/cooking)!
Cook
_____ she good at _______ (to climb) trees?
Is.....climbing
We are hopeless at ________ (to swim).
swimming
Are you _______ (adjective) at _____ (to drive)?
good/bad/etc at driving.