短文改错。
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（?）, 并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Although all the students seem very happily at our school, as far as we concerned, the buildings
would be more beautifulif the school could be decorated. We students thought the schoollooks like
a desert and the concrete walls like the grey sky in a rainy day. We would be much happier and are
able to study well if the walls of the school could be decorated with posters, photos and paintings, that
could certainly broaden our horizons and enrich our lives. Original art work are too expensive, but
unless we buy art posters, the cost will be low. Using only a little money, it can make our school a
nicer place.
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