With the word PM 2.5 ________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
It is said that the famous football star is now willing to play for______ would pay him three million dollars a year.
Apples are usually sold by______ weight, and eggs are sometimes sold by______ dozen.
.How long do you think______ the construction company finishes the project?
The Beatles singing Yesterday______ memories whenever we hear it.
Tom is the only one of the students who______ a winner of scholarship for four years.