Tenses Usage Quiz

Every year, millions of tons of plastic _____ into the oceans, threatening marine life.

• dumps

• is dumped

• are dumped

• will dump

Answer explanation

The correct choice is 'are dumped' because it agrees with the plural subject 'millions of tons of plastic' and indicates an ongoing action in the present tense, highlighting the continuous threat to marine life.

Renewable energy _____ a key role in achieving global sustainability.

• play

• plays

• playing

• played

Answer explanation

The correct choice is 'plays' because 'renewable energy' is a singular noun phrase, requiring the singular verb form. Thus, the sentence reads: 'Renewable energy plays a key role in achieving global sustainability.'

Many governments _____ stricter environmental laws to reduce carbon emissions.

• is enforcing

• has enforced

• enforce

• enforcing

Answer explanation

The correct choice is 'enforce' because it matches the plural subject 'governments' and is in the present simple tense, indicating a general action. The other options do not fit grammatically with the subject.

The report _____ that more than 70% of the world's freshwater is used in agriculture.

• show

• shows

• showed

• showing

Answer explanation

The correct choice is 'shows' because 'report' is a singular noun, requiring the singular verb form. 'Shows' agrees with 'report' in number, while 'show', 'showed', and 'showing' do not fit grammatically in this context.

Sustainable practices in farming _____ both the environment and the farmers themselves.

• benefit

• benefits

• benefiting

• has benefited

Answer explanation

The correct choice is 'benefit' because it agrees in number with 'practices,' which is plural. The sentence states that sustainable practices positively impact both the environment and farmers.

In 2015, world leaders _____ the Paris Agreement to combat climate change.

• signs

• signed

• had signed

• were signing

Answer explanation

The correct choice is 'signed' because it is the simple past tense, indicating that the action of world leaders signing the Paris Agreement occurred in 2015.

Last year, a small village _____ solar panels to provide energy for its community.

• installs

• is installing

• installed

• had installed

Answer explanation

The correct choice is 'installed' because it indicates a completed action in the past, which aligns with 'last year' in the sentence. The other options suggest ongoing or future actions, which do not fit the context.

Before the policy was enacted, many factories _____ untreated waste into rivers.

• dumps

• dumped

• had dumped

• dumping

Answer explanation

The correct choice is 'had dumped' because it indicates an action completed before the policy was enacted, fitting the past perfect tense needed in this context.

The UN _____ its Sustainable Development Goals during the General Assembly in 2015.

• announces

• announced

• had announced

• was announcing

Answer explanation

The correct choice is 'announced' because it indicates a completed action in the past, which aligns with the context of the UN declaring its Sustainable Development Goals during the 2015 General Assembly.

The scientist _____ solutions to clean polluted rivers when she discovered a breakthrough.

• researched

• was researching

• had researched

• is researching

Answer explanation

The correct choice is 'was researching' because it indicates an ongoing action in the past when the scientist made her discovery. The other options do not fit the context of a past breakthrough.