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Have you got a/an apple?
Have you got an apple?
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How many crayon/crayons have you got?
How many crayons have you got?
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I can see a/an box.
I can see a box.
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How many rubber/rubbers can you see?
How many rubbers can you see?
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I have got a/an umbrella.
I have got an umbrella.
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A chair/chairs are usually brown.
Chairs are usually brown.
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