Answer:
Simple (Definition is provided on your page)
compound (Definition is provided on your page)
complex (Definition is provided on your page)
compound-complex (Definition is provided on your page)
Explanation:
1 A knight's training began early in life, it ended in the knight's teenage years. (compound)
2 all of the sentence (simple)
3 they often rooted for a favourite knight (Complex)
4 the matches were a popular part of life, townspeople regularly gathered to watch these events (Compoound-Complex)
5 all of the sentence (Simple)
you just need memorize these and their definitions, there is no other way to remember how to differentiate simple, compound. and compound-complex.
