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；
该行多一个词：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。
该行缺一个词，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。
该行错一个词：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。
To my opinion, there are advantages and disadvantages 1．__________
traveling both by plane and by train．Travel by plane is 2．__________
time-saving, comfortably, and you can have a good rest 3．__________
on the trip, but it is too expensive．Unless you travel by 4．__________
train, it is not expensive and quite safety and you can 5．__________
appreciate the beautiful sceneries on both sides of the 6．__________
railway．However, it was too crowded and time-wasting． 7．__________
and we can take a good rest．So you can see every 8．__________
coin has two sides．You’d better to choose either of 9．__________
them depending on your own interest or economy． 10．__________