Their cheerful voice showed that they were doing ___ .

The number of road accidents and the deaths those accidents over the past years.

engliang, or positive energy, _______aterm used in the book Positive Energy by Richard Wiseman, has developed into apopular phrase in Chinese society where people approach life with optimism andconfidence.

They _____ another song from Susan because she sang so well.[ ]

Thank you ________ your help, David. —You’re welcome.