2. Once *upon* a time *in* Great Britain there lived a queen.
3. *In* the end of summer he will take *?* (Должно быть *a*?) water polo. (Должно быть *a*?)
4. Martha out *on* her best dress *for* the party.
5. She dreamed *about* the career *?* (Должно быть *as*?) a doctor.
6. We are fond *for* our cat and we look *after* it well.
Тут со словами about,after,at,in,for,of,on,on,up,upon что-то не то.