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Exercise "CAN / MUST", created by webmaster (a free exercise to learn English):
Results of the 1 055 002 people who have taken this test:
Average mark: 81.5 / 100 Share
Latest member with a 100/100 (perfect mark): mgalantus / BIELORUSSIA, on Monday 08 September - 14:23:
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They got a perfect mark
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