Are the keys yours?－No, they aren’t _____. I think they’re Jason’s.

Hurry, Mike! The bus is coming. —Wait a moment, please! Let me see if there’s __________ left.

To our _____，the boy made no mistakes in the exam this time.

He is very kind _______ the old man. [ ]

Did you see Mary and her sister this morning?– Yes, I saw _________ girls playing in the playground.