A 15-minute Test - grade 11

Choose the best answer to complete the following sentences. 

_________ at by everyone, he was disappointed.

• Laughed

• Laugh

• Laughing

• Being laughing

_______ their farm work, the farmers returned home.

• Finishing

• Finish

• Having finished

• Being finished

When trees are cut down or burnt, they __________ the carbon they store into the atmosphere.

• release

• keep

• restore

• trap

Choose the best answer to complete the following sentences. 

One of our goals is to reduce global CO2 ..............by half in about ten years’ time.

• number

• emissions

• release

• waste

Choose the best answer to complete the following sentences. 

Carbon dioxide is a ......... gas because it traps too much of the sun’s heat and stops it from escaping back into space.

• hot trap

• trap heat

• heat-trap

• heat-trapping

Choose the best answer to complete the following sentences. 

Emissions of .................. from indoor stoves can cause serious health problems.

• Renewable

• greenhouse effect

• black carbon

• Non-renewable

Choose the best answer to complete the following sentences. 

Global warming is the __________ in the earth’s temperature caused by greenhouse gases.

• balance

• pollution

• increase

• heat

Choose the best answer to complete the following sentences. 

Countries should switch __________ clean sources of energy.

• from

• on

• to

• off

Choose the best answer to complete the following sentences. 

Methane is __________ for more than 30 per cent of global warming from human activities.

• responsible

• dirty

• powerful

• important

Choose the word whose underlined part differs from the other three in pronunciation in each of the following questions.

• refer

• remind

• release

• effect