I ________ (could / couldn't) climb trees when I was six.
I ________ (could / couldn't) dress up for Halloween when I was seven.
I ________ (could / couldn't) play the guitar when I was two.
I ________ (could / couldn't) cook when I was five.
I ________ (could / couldn't) skip the rope when I was three.
I ________ (could / couldn't) dance when I was four.
I ________ (could / couldn't) ride a bike when I was six.
I ________ (could / couldn't) catch a ball when I was five.
I __________ (could / couldn't) jump on one leg when I was four.
I ________ (could / couldn't) swim when I was four.