Choose the sentence that correctly combines two or
more expressions of time:
Select the sentence that correctly uses the past perfect
tense in the passive voice.
Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, principally carbon dioxide emissions resulting from the burning of fossil fuels. Scientists argue that global warming has led to environmental and social changes, including more frequent wildfires, longer periods of drought in some regions, and an increase in the number, duration, and intensity of tropical storms.
Which of the following actions is primarily aimed at directly reducing the impact of global warming?
Choose the sentence that correctly uses both a common
adjective and a demonstrative adjective:
The Internet is a global network of computers and other
electronic devices that allows users to share information
and communicate from anywhere. It has dramatically
changed the way we live, work, and interact. The
Internet's origins can be traced back to research
commissioned by the federal government of the United
States in the 1960s to build robust, fault-tolerant
communication via computer networks.
Which statement best reflects the primary impact of the Internet?
Which statement best reflects the primary impact of the Internet?