第1个回答 2012-12-09
It took me 20 to 30 minutes to go to school by bus.
第2个回答 2012-12-09
It took me 20 to 30 minutes to go to school by bus.
第3个回答 2012-12-10
it took me 20 to 30 minutes to go to school by bus
注意！ it 是形式主语 这里真正的主语是 to go to school by bus
为了避免头重脚轻 所以用形式主语 it本回答被提问者和网友采纳
第4个回答 2012-12-09
i took me twenty-thirty minutes to school bu bus.