Hewent _____ his way _____ some flowers for his mother.[ ]

They studied _____ exams last month. [ ]

_________ did you do with old books?— I sent them to children in poor areas.

What a delicious joke! This sentence means _____.

Excuse me, but I don’t think you can take photos here.— Sorry. I _______ this is no-photo zone.（地区）