I agree with the other person, the other sentences are not complete. so in turn it must be: Wagon trains might include 100 wagons.
maybe
Explanation:
Her passionate speech about the importance of fighting for justice was moving.
The eager looks on the students' faces showed that they were ready.
The performers appreciated the enthusiastic applause they received after the show.
The soccer team was excited about earning a spot in the playoffs after the recent win.
