___ ENJOYABLE IT IS TO TRAVEL BY AIR!

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• had better do sth可以默认为一般过去式吗例如You had better take a map with you when travel so that you wouldn't get lost.
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• 一片英语科技短文的选择here have been many great inventions, things that changed the way we live in. The first great invention was one that is still very important today一the wheel. This made it easier to carry heavy things and to travel long distances. For hundreds of years after that there were few inventions that had as much effect as the wheel. Then in the early 1800's the world started to change. There was little unknown land left in the world. People did not
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• The cheap way to travel is by taxi The cheaper way to travel is by bus合并成一句话
• 英语一段,要翻译正确 急~!翻译下 要正确的. Villagers are much healthier than people who live in towns. One reason for this is that country air is fresher than the air in smoky cities. The villager is breathing fresh clean air all day in the fields, but the air the townsman is breathing is always full of smoke and dust.
• 完形填空:the air here is fresh and clean.the people here___friendly.a:isb:arec:be
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