They're making some changes to my school, and the school rules. They haven't decided anything yet, but they (1) will/might change the school uniform. The colour and the style (2) has to / could change. I hope so! I don't like the one we wear now. Also, lessons (3) could/should change from 45 minutes to 50 minutes. I'm not so keen on that! They (4) may / might build a new sports hall. That would be great, wouldn't it? I think they're going to decide next month, so we (5) must / should know what's happening very soon!