How do I do this problem?

Late at night some traffic signals change patterns and become ?

Wats iqpow pls write 20 words for an answer

All of these sentences include commonly confused homophones. which sentence is correct? you put too much sugar on your breakfast serial. my father grows vegetables and flours in his garden. will someone me untie the knot in my shoelace? when did the captain set sale on his trip to north america?