综合填空. 选词(one space drive much park safe need kilometre ) Small cars may take the palce of big cars in the future.There is 1.space for only two people in such a car.If every 2.drives such a car,there will be less pollution in the air.There will also be more space for 3.parking cars in cities,and the streets will be less crowded.The little cars will cost 4.much less.Driving will be 5.safer,too,as these little cars can go only 6.kilometres per hour.If big cars are still used along with the small 7.ones,two sets of road will be 8.needed in the future. 能解释下这8个空格为什么选这个单词和这个形式吗?还有短文顺便做下翻译。