(a) As airlines struggle to cope with rising fuel prices, they have been searching for new ways to generate "ancillary revenues"

(b) This week, an American airline said it would start to be charged &7 for a pillow and blanket on some flights. (c) Oher airlines are demanding extra for passengers to check in luggage. (d) In addition, airlines are considering making passengers pay $2.50 a minute to make calls and 50 cents for text messages.

d번에 airlines가 주어가 되고 능동태가 되어있는데 airlines가 고려되어지는거 아닌가요? 사람이 아닌 사물이 주어가 됬을때도 능동태가 될 수 있나요?