use context clues determine the blanket words

1:On Halloween,he will (masquerade)as a ghost by using a sheet.
2:He was (ailing ),so he stayed home from school and went to the doctor.
3:The book was so (enthralling),that we wanted to keep on redding
4:He wrote an (inaccurate)answer for the math problem and had to correct it.
5:The (rubbish) was laying outside and around the trashcan,making a big mess.