The little boy wasn’t listening _______ in class, so he often missed some important parts.

I’m not sure what will happen during the trip, _____, I will try all possible means to get there [ ]

My cousin is _________ sometimes. It’s hard for him to change his mind even though his idea is not right.

The club, _____ 25 years ago, is holding a party for past and present members.

Miss Xu is ______ Music teacher. is a good teacher.