Do you think building more subway lines is better than adding more buses? Why or why not?
학생이 쓴 원문
I think Subways are more efficient because they can carry a lot of people. But, Subways can cause sinkholes.
강사 첨삭
Hi, Susan!
Thank you for always doing your homework. You\'re definitely right! Subways are efficient because, as you said, they can carry more people and are also safer. However, you\'re not wrong that digging tunnels for subways can cause sinkholes, which is one of the major problems on Korean roads nowadays.
- T. Caitlyn
I think Subways are more efficient because they can carry a lot of people.
>> CORRECT
But, Subways can cause sinkholes.
>> CORRECT
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