Put the sentences (a-c) in the correct order, then fill in the blank to make a logical text.

I had a hard 10-day course in an army camp in Son Tay last summer. Everything was different from my life at home. ______
A. We had to wake up at 5 a.m. and attend classes which were like training courses for soldiers.
B. In the evening, we read books or worked in teams with many exciting activities.
C. We also joined a performance that had the theme: environmental protection.