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Exercise "Countable or uncountable?", created by webmaster (a free exercise to learn English):
Results of the 98 455 people who have taken this test:
Average mark: 85.5 / 100 Share
Latest member with a 100/100 (perfect mark): rachida / ALGERIA, on Thursday 29 September - 17:11:
" Very good exercise ,easy .Thank you."
They got a perfect mark
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