Marie a tricoté un pull qui est plein de trous ?
yeah.. i just put tricote and it says typo, tricota??
You mistakenly used the present tense. Due to a glitch, Duo corrected your mistake with a form in simple past tense with very similar spelling.
You should have used passé composé tense, a tricoté instead of present tense, tricote.
That means "Marie knitted a sweater that is full of holes".
How is this in 'Tech' ?
Knitting is a technical skill.
Err... I don't want to be overly technical, or anything..
... but isn't ALL knitting mostly composed of holes loosely held together with looped and knotted yarns? I mean, at least a THIRD of a sweater is the space between its knitted stitches.