—Have you heard about Apple iPhone 4?—Sure.It is very hot these days.I’m thinking about getting _______.
December is _______ month of the year.
This took place in the ______ .
It is only _____ from my home to the train station.
There are ______ in this building , I live on ______.
The water behind the Three Gorges Dams (三峡大坝) should be ______ higher than downstream(下游)。