此题要求改正所给短文中的错误。对标有题号的每一行作出判断；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，在该行的右边横线上写出改正后的词。
注意：原行没有错的不要改。
There are so much road accidents every day .                    __________
They are often caused by carelessness . But there                 __________
are many rules that they help to make the road safe .              _______
Here are some rules what we ought to know : In Hong Kong        __________
traffic keeps to the left . Before cross the                        ___________
road , we must stop or look at both sides . Look                  _________
right , look left and look right again . If the road                  __________
is clear , it is safe cross the road . If                            ___________
we saw small children or very old persons ,                      __________
or blind people waiting to cross the road , you                   __________
can help them to cross the road safely .