Helping others is a habit, _____ you can learn even at an early age.

He had lost his temper and his health in the war and never found________of them again.

— Would you get me a bar of chocolate from the kitchen, dear?—______one?                                        

—Have you got any plan for the coming summer holidays?—Well，I’m going to a quiet place, especially _____ suitable for relaxing myself.

---Excuse me, I want to have a letter mailed, but I can’t find a post office.--- I know ______ nearby. Come on, I’ll show you.