Apedia

Planet Work Protect Earth Ball Shaped Object Live World

Idx 0930
Keyword earth
Sub Entry Number 1
Type of Sentence
Error Sentence We must all work together to protect the earth.
Correct Sentence We must all work together to protect the planet.
Cloze Error Sentence We must all work together to protect the [[earth]].
Cloze Sentence We must all work together to protect the [[planet]].
Cloze Answer planet
Choices earth | planet
Explanation

earth/Earth = the ball-shaped object that we live on, usually seen as a planet in space: 'The earth moves round the sun every 365 days.' 'On the journey back to Earth, one of the spaceship's computers failed.'

world = the ball-shaped object that we live on, usually seen in terms of people, countries, cities etc: 'Tuberculosis is still common in some parts of the world.' 'It's one of the largest countries in the world.' 'You'll be seeing some of the world's leading golfers.'

Note the expression all over the world (= everywhere in the world): 'I have friends all over the world.'

planet = the ball-shaped object that we live on, usually seen in terms of the natural environment: 'This disaster could affect the whole planet.' 'The planet is gradually getting warmer.'

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