1. (2020九上·绍兴期中) 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Cycling, which means riding a bike, is popular among children from across the UK. They (save) parents more than 18,000 in petrol (汽油) costs in the last three weeks, by(cycle) a million miles to school.

With petrol prices rising, families across the country are searching  ways to cut down petrol costs. More than a quarter of a million children have shown how choosing two wheels  of four can help families save money. If children keep cycling to school all the year round, families in the UK can save  (they) nearly ₤3 million in petrol costs.

According to Matt, director of the East Midlands, "At first, I wondercycling could improve a child's performance at school or not. But things turn out to be fine. "By regularly cycling to school, we become fitter, smarter and (good) learners. We do love it!" a student called Tommy said  (excited) "It's great to see more people cycling, and I always smile when I see a family or a child on a bike. So many kids want to cycle, so we should make  easy for them to get around by bike and keep (health)." Mark said.