明清时期粮食生产呈现集中趋势,太湖流域、鄱阳湖地区、洞庭湖地区、江汉平原、北方的井灌地区、成都平原成为粮食生产的重要地区。这一现象产生的客观影响是
Did you do the homework _____?
Yes, I finished it on my own last night.( )
you
your
yours
yourself
Of the two coats,she'd like to choose the _____ one to save money for a book.( )
cheapest
cheaper
more expensive
most expensive
Hangzhou is _____ the east of China.( )
on
in
of
from
The online shop sells _____ shoes at a very good price.( )
child
child's
children
children's
Annie can play _____ piano very well.( )
a
an
the
/