Although he is ____ boy ,he knows a lot about the universe.A. a eight-year-oldB. an eight-years-oldC. an eight-year-old
My aunt forgot _______.
The price of this computer is the ______ of the three.
--_____ we make it half past seven? --What about _______ it a little earlier?
He walked ________ fast for us ________catch up with.
_______ my mother ________ my sister watches TV plays these days.