By the first day of August, 2007, the PLA ________ for eighty years.

There ______ some Chinese girls in Miss Gao’s class.  

— You seem familiar with Mr. John?—Of course, we _________ together for three years in the 1990s.

—When 　     Jessy 　     to New York?   —Yesterday．

——How often do I need to feed the dog?——It___food everyday, or it will be hungry.