Choose the correct answer to complete the sentence. "Humans now have to suffer the effects of global warming due to having_____ the environment irresponsibly"

Before the invention of the printing press, books have been all printed by hand.

Jill regrets having bought that second-hand laptop. She wishes she ______. 

The amount of books in the Library of Congress is more than 58 million volumes

Lightning rods are used for to direct intense electrical bursts into the ground instead of into buildings and people

In the whole I agree with what you’re saving, but I’m not sure about your last point.

He seldom goes to the park, _    ?

The police officer lectured the children for ten minutes about the dangers to throw stones, but then let them off with  warning.

A great aviation pioneer, Amelia Earhart was already famous when she sets out on her ill-fated attempt to circle the globe in 1937’s

“ This is not a good essay,” said the lecturer. “I find your arguments convince”.

People with exceptionally high intelligence quotients may not be the best employees since they become bored of their work unless the job is constantly changing

Indiscriminately dumping of waste material and inadequate sewage treatment are two serious causes of environmental pollution.

There are only ...........few seats left for …………… tonight's musical at ...........university. 

Those of us who have a family history of heart disease should make yearly appointments with their doctors.

Some psychologist believe that those who are encouraged to be independent, responsible, and competent in childhood are likely more than others to become motivated to achieve.

The graphics ability of a computer depend on the speed of its processor and the size of its RAM

The bath overflowed and the water dropped through into the living room

Inventing by Roger Bacon, the magnifying glass led to the creation of other scientific tools which have produced immeasurable scientific progress.

Choose the best option:

Certain chemicals have been banned because of their damaging effect on the environment.

He had so a difficult exercise that he couldn’t do it .

During his speech in Congress, the President stressed the importance of good education for the well-being of generation to come