题目

Everyone tries to get to school on time. But when bad weather gives you trouble, can you still make it before the bell rings? In northern China during spring, big sandstorms often make trouble for students and everyone else. When the sky is dark with sand, buses and cars all move much more slowly. Sometimes, people can’t even see for 20 metres. Sandstorms usually happen in spring. This year, sandstorms started in late March. They have happened in more than 10 provinces (省)  in northern China this year. More than 70 million people have had problems in those places because of the sandstorms 一曲新词酒一杯，           ，             ？无可奈何花落去，            ，小园香径独徘徊。