根据句子意思，用括号中所给单词的适当形式填空。
小题1:_________ (luck), they didn’t win the basketball final math, though they put all their effort into it.
小题2:You are one of the ________________ (pretty) girls I have seen
小题3:After four _________ (hour) flight, I felt very tired.
小题4:My mother bought a big cake for my grandma’s _________ (ninety) birthday yesterday.
小题5:There are forty-five people in the classroom, __________ (include) the teacher.