（）visiting the Great Wall,we also plan to have a look at the Tiananmen Square this year.

单项选择题（）of the land in the city（）covered with trees and grass.

A.Two-third；is
B.Two-third；are
C.Two-thirds；are
D.Two-thirds；is

单项选择题We will never forget the days（）we lived in the countryside with the farmers,（）has a great effect on his life.

A.that；which
B.when；which
C.which；that
D.when；who