1 When you are on duty, you are always sloppy. Dust was flying when sweeping the floor, and the blackboard was not cleaned. You should be punished to be a duty student for another day.

2. In recent years, sandstorms have become more and more frequent in northwest China, and flying sand and stones and yellow dust have covered the sky, which has brought many inconveniences to people's lives and work.

Trees can filter the dust in the air.

The stone bench in front of the old house is already covered with dust.

5. The synonyms of retort pouch fish are retort pouch fish and retort pouch fish.

6. Leaves return to their roots, and they fly to their mother's feet, turn into dust, nourish the soil, and end a short and fulfilling life.

7. But I still cut the flag, chased the north, wiped the dust, and smashed its handsome.

If I were a breeze, I would blow away all the dust.

9. Our school-run factory has developed a new type of dust-free chalk.

10, his shoulder strap backpack, covered with dust, seems to have traveled a long way.

1 1, you would rather throw yourself into the river and die in the belly of a fish than be polluted by the world.

12, Thailand is very clean. Whether in rural or urban areas, the windows are bright and clean, and there is almost no dust on the road.

13, people hope that companies that have been unruly before can follow in the footsteps of Southern Medical.

14. It's a holiday, and the classroom is full of dust, so it's time to clean it well.

15, retort fish literally means that there is dust in retort and mullet in pot.