第1个回答 2012-06-01
The bike is my favorite means of transport, because it does not cause any air pollution.
第2个回答 2012-06-01
bicycle is my favorite transportation,for the simple reason that doesn't cause any air pollution
第3个回答 2012-06-01
Bicycle is my favourate traffic tool,for the simple reason that it doesn't cause any air pollution.本回答被提问者采纳