Every morning, Sam is so enthusiastic to begin his day that he jumps out of bed and begins to sing.
His mother became worried when she didn't hear from him for two days.
David is quite shy so he doesn't like talking to people he doesn't know.
A year after being fired from his job, Alan is still very bitter. He has a lot of resentment towards his former boss.
Even though I am accustomed to traveling for business, I still get homesick if I am away from my home for more than a week.