---How old is Esther Greenbaum? ---Don't ask her how old she is—she's really ______ about it.
Mark needs to learn Chinese ______ his company is opening a branch in Beijing.
Paper money was in ____ use in China when Marco Polo visited the country in ____ thirteenth century.
----I’m sorry I made a mistake ! ----_______. Nobody is perfect .
--- You know Brad Pitt is already fifty. --- You are kidding.He doesn’t look __________ .
There is no easy walk to __________ freedom anywhere,and many of us will have to pass through __________ valley of the shadow of death again and again before we reach the mountaintop of our desires.