Hi, Mary. What’s your sister doing —–Oh, she is talking _____the phone with her classmate.

To be sure, the new cut in interest rate（利率）is _______ to improve economic performance in all these fields.

It is the fact _______ Jane doesn’t know Jolin is a popular singer ____ surprises us all.

A big earthquake hit Japan theafternoon of March, 11th,2011.

Every year, Tom remembers to have some flowers _____to her mother on her birthday [ ]