Answer is abab bcoz u have to see last word of every line name the first sound as A which is sun and in second line name second sound of red as B , in 3rd line again sound of 1st line repeated i.e dun so its again A and similarly in 4th line head gives same sound as red gives in 2nd line so again B.
FINAL scheme is ABAB
It played a good roll because it helped people understand more
Metaphor ...................
Answer:
1) has / playing / is preparing
2) while I was doing homework, my mother was arriving home