Jim _________ a lot about Chinese culture since he began to study in our school.
learns
learned
will learn
has learned
English is as as math.( )
important
more important
the most important
Jim's birthday is January.( )
on
in
at
They plan to plant trees next year.( )
three hundred
three hundreds
three hundreds of
She is eight﹣year﹣old girl.( )
a
an
the
These keys are ( )
she
hers
her