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Exercise "Obligation or not", created by anonyme (a free exercise to learn English):
Results of the 2 524 people who have taken this test:
Average mark: 65 / 100 Share
Latest member with a 100/100 (perfect mark): biscotte92 / FRANCE, on Wednesday 05 April - 09:34:
"Good exercise! I loved! Thank you so much! :)"
They got a perfect mark
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