Who told you my address ? — I don’t remember clearly. It _____ Li Mei.　 —It _____ Li Mei. She doesn’t know it.

s economic development has made ______ rapid progressin the past 10 years, and young people have made ______ great contribution tothis progress.

This chair is black and that is orange chair.

of children by 2060, when each group____ to account for about one fifth of the population

riving to Beijing after breakfast. —Take care,withall this fog.