ou know why the Yellow River basinis called the Cradle of Chinese Civilization —Well, well, _____ I’ve never readabout that

His strength ran ________ after he covered that long distance.

only too ready to help others, seldom, _____ ,refusing them when they turn to him.

This computer doesn’t work, Sir.–Well, bring it back, ______ we’ll return your money.

Please ask your friends___________so much noise．