If he ________ hard today, can he have a holiday tomorrow?

Global warming has severe impact on water supplies.

In the past, a lot of countries denied having contributed to global warming

These companies were accused on having released a large amount of carbon dioxide into the atmosphere.

Deforestation is one of the biggest environmental threats to the ecological balance in the world.

We need to cut down on the emission of carbon dioxide into the atmosphere.

The driver was ________.

Choose the word or the phrase or sentence that best completes each unfinished sentence below

_________ air is one of the many problems we have to solve.

The factory was accused ____ having caused higher level of pollution to the environment.

I’m disappointed _________ people have spoiled this area.

Land erosion is mainly caused by widespread deforestation.

Humans now have to suffer the effects of global warming due to having treat the environment irresponsibly.

Most people admit that they contribute to global warming.

Having denied the responsibility for the environmental it caused, the factory was forced to close down.

Having been warn about the relationship between climate change and the spread of infectious diseases, everyone should get vaccinated.

We couldn’t go on a picnic as planned __________ it was raining.