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Exercise "Countable or Uncountable?", created by webmaster (a free exercise to learn English):
Results of the 227 781 people who have taken this test:
Average mark: 76.5 / 100 Share
Latest member with a 100/100 (perfect mark): k11a22n / MOROCCO, on Friday 16 February - 18:28:
"GOOD LUCK"
They got a perfect mark
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