You can eat as much as you like.

I like playing the piano.

This restaurant offers an all-you-can-eat service on weekends.

I'm really having difficulty with his behavior.

They (referring to women or girls) are my best friends.

Throwing away food scraps is a waste of food.

He always bothers about me.

He says that what you like to do, you do well, so he practices drawing every day.

He always has a mischievous smile on his face.

He has a warlike personality, always playing strategy games.