短文改错：
此题要求改正所有短文中的错误。对标有题号的每一行做出判断：如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则按下列情况改正：
此行多一个词：把多余的词用斜线（\）划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号（^）,在该行右边横线上写出该加的词。
此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
注意：原行没有错的不要改。

Nowadays in the United States, more and more people are	76. _____________
beginning to build underground houses where save open land.	77. _____________
When houses are underground, there are more land for parks,	78. _____________
playgrounds and gardens. Underground house also save energy.	79. _____________
They use only a few energy to stay warm or cool. As we know,	80. _____________
the idea underground houses is very old. People in the past	81. _____________
live in underground houses and underground cities in China. And	82. _____________
today you can’t find large underground shopping centers in China,	83. _____________
Japan, South Korea and Canada as well as. Some countries also	84. _____________
build underground factories and shop-houses to held things.	85. _____________