要把词放到句子中来理解!sew本身是动词,v+ing就成了名词,但也有在句中充当动名词的可能(somebody is sewing something)。
it is the average person, but you could say the person's average xxx(score) is xxx(90).
originally, the ode was a ceremonial poem written to celebrete public occasions. / The ode was originally a ceremonial poem written to celebrete public occasions.