topic 1:During an earthquake, we should find a safe place. We should get under a strong table. If we are indoors, we shouldn’t run outside or use the elevator because it can be dangerous. We should stay away from windows, glass, and heavy objects. After the shaking stops, we should leave the building carefully and follow safety instructions.

1.It was hard to go outside during the heatwave last week.
2.Air pollution in big cities can lead to serious health problems.

1.unless this store sells emergency kits, I’ll check the other one.
2.If you throw trash into the river, it will become more polluted.
3.The factory is dumping waste in the lake, so it is polluted.