My documents are always ______ outaccording to the contents and dates so that I have no trouble in finding them when they_______.

It’s not necessary to explain the truth ____ there is spring wind, there is green grass. [ ]

__________ big the office is! Is it for Tom—No, it’s ___________. He shares it with me.

Mr. Li’s never been to Shanghai, has he— . He went there to attend a meeting last week.

You effort is sure to pay __________—Thank you for you encouragement