He’s never lost a day’s work through illness. He’s as _____ as old boots.

In the middle of the room stands a__________ table.

------What do you think of the opinion?------ None has given me______ piece of advice.

Though the situation is rather serious, financial leaders are still ______ about global economy.

 Don’t always think you are _______ to the others; in fact, you are just an ordinary person.