Tina， is this schoolbag? ——Yes，it’s mine.

Tom usually _________ a bike to school. Look, he _______ to school now.

The boys _____ green sports shirts are the fans of Guo’an Team.[ ]

There is no doubt _______ my friend is not satisfied with what they have done.

Why not go to see the dolphin show with me?－Because I _______ it.