---What ______ the forest of Yangzhou in the last 30 years?---Yangzhou has become much greener.
I want to know ______ she will look like when she grows up.
He couldn’t even afford a cup of tea because he had ______ money left.
We went to Quanjude to eat Beijing Duck ______ we arrived in Beijing.
Don’t you know it’s ______ useful book for English learners?
The TV show, Where are we going, Dad?,is one of the ______ programs in China in 2013.