______ October 1,we will celebrate the seventieth birthday of the People's Republic of China.( )
A.OnB.InC.At
Lei Feng ______ for many years,but his spirit is still encouraging us.( )
died
has been dead
has died
You'd better get up earlier,______ you'll be late for school.( )
and
or
but
﹣Do you know Shanghai is one of ______ in the world?
﹣Yes,it's bigger than ______ city in China.( )
the biggest city;any
the biggest cities;any
the biggest cities;any other
﹣I saw your mother in the library just now.
﹣It ______ be her.She went to Beijing yesterday.( )
can't
mustn't
needn't
About ______ of the land ______ covered with trees and grass.( )
three fifths; is
three fifths; are
three fifth; are