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Exercise "Must / don't have to", created by anonyme (a free exercise to learn English):
Results of the 3 395 people who have taken this test:
Average mark: 64.5 / 100 Share
Latest member with a 100/100 (perfect mark): ronald1955 / SWITZERLAND, on Wednesday 13 August - 15:02:
"Thanks a lot for this exercise !! Well done !!"
They got a perfect mark
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