Question

!! Нужно поставить в правильное время!! 1. When gasoline is burnt to power cars and trucks, it (produce) carbon monoxide. 2. Carbon monoxide is harmful when it (concentrate) in great amounts. 3. If the air in a city (get) very polluted, it can make people’s eyes burn. 4. If smog is frequently formed in a city, it (cause) difficulty in breathing, headaches and even lung cancer. 5. Some cities that suffer from extreme smog, issue air pollution warnings. If you (live) in Hong Kong, you would often hear official warnings not to go outside or engage in strenuous physical activity (such as running or swimming). 6. Unfortunately, we only recently discovered how air pollution contributes to global warming. If we (know) about it earlier, we might have taken stricter measures in time.

Answer 1

1 produces
2 concetrates
3 gets
4 causes
5 lived
6 had known

Answer 2

1. When gasoline is burnt to power cars and trucks, it produces carbon monoxide.

Gasoline combustion in cars and trucks produces carbon monoxide as a byproduct.

2. Carbon monoxide is harmful when it concentrates in great amounts.

Carbon monoxide can be harmful when it accumulates in high concentrations. Breathing in high levels of carbon monoxide can lead to carbon monoxide poisoning, which can be life-threatening.

3. If the air in a city becomes very polluted, it can make people’s eyes burn.

When the air in a city becomes highly polluted, it can cause eye irritation and discomfort. This is due to the presence of pollutants and irritants in the air.

4. If smog is frequently formed in a city, it can cause difficulty in breathing, headaches, and even lung cancer.

Frequent formation of smog in a city can have various adverse health effects. It can cause respiratory problems, such as difficulty in breathing, and can also lead to headaches. Prolonged exposure to smog and air pollution has been linked to an increased risk of lung cancer.

5. Some cities that suffer from extreme smog issue air pollution warnings. If you live in Hong Kong, you would often hear official warnings not to go outside or engage in strenuous physical activity (such as running or swimming).

Cities that experience severe smog and air pollution often issue air pollution warnings to protect the health of their residents. For example, in Hong Kong, where air pollution can be a significant issue, official warnings are frequently issued advising people to limit outdoor activities and avoid strenuous physical exertion.

6. Unfortunately, we only recently discovered how air pollution contributes to global warming. If we had known about it earlier, we might have taken stricter measures in time.

The link between air pollution and global warming has been a topic of scientific research and understanding for some time. However, the full extent of the contribution of air pollution to global warming and climate change has become clearer in recent years. If this knowledge had been available earlier, it is possible that stricter measures could have been implemented to mitigate the effects of air pollution on global warming.

Please note that the information provided above is based on general knowledge and may not be specific to the current date and time.