【题目】As is reported, it is 115 years ______ Peking University was founded.

【题目】Unless______ to speak, you should remain silent at the conference.

【题目】It is impossible to avoid ______by advertisements in a modern society.

【题目】 The world will be different, and we will have to be prepared to ________ the change.

【题目】The paper ox my grandmother _________ for me is my most valued birthday gift.

【题目】During the Song Dynasty, people played a game called cuju, which is regarded as the ______ of ancient football.

【题目】 Let us not waste____________ time we have left.

【题目】 ____ is known to all is ____ Diaoyu Island is part of China.

【题目】I suggested to my roommates that we ______ for a picnic, and all of them agreed.

【题目】As ______ matter of fact, many people speak English in Asia as ______ foreign language.