The passer-by jumped into the cold water to save the _____ boy, who cried for help, but it was too late and the boy was _______ at last.

Your suggestion on how to improve English writing ability is too general. Could you make it more _______?

Between 4.5 and 3.8 billion years ago, the earth became so ______ that it was not clear whether the shape would last or not.

Qingdao is an________ city________ the eastern coast of China.

Debbie’s smiling face can make her customers feel ______so you have to improve the way _____you deal with your customers.