It is not a secret pupils dont like even hate doing homework. It can be easy or difficult, big or small, interesting or boring. In any case, it takes a lot of time, energy, efforts.
So, many children use textbooks with homework keys to do the homework without efforts and thinking.
In our class 95% of my classmates have such text books. Unfortunately 90% of pupils use them working at home. They forget about the importance of knowledge in future life and career. They do not develop their personality, their mind and thinking. They want only excellent estimation.
People! You learn for yourselves, not for teachers! Your future success depends on your real work at school and home. Dont cheat! Dont use textbooks with homework keys.