you're the best guitarist in the school no one he didn't remember anything about it and l didn't either he forgot school uniforms don't have to be worn at all times students don't fry food which can be grilled avoid with luck she will win the cookery competition if

you're the best guitarist in the school
no one ...in the school plays guitar better than you.
he didn't remember anything about it and i didn't either
he forgot ....anything about it, and i did, either
 school uniforms don't have to be worn at all times
students...don't have to wear school uniforms.
don't fry food which can be grilled
avoid......frying food which can be grilled.

with luck she will win the cookery competition
if...she is lucky, she will win the cookery competition.