To go back to the exercise
Exercise "Must and mustn't", created by anonyme (a free exercise to learn English):
Results of the 30 538 people who have taken this test:
Average mark: 73 / 100 Share
Latest member with a 100/100 (perfect mark): ploplo / SWITZERLAND, on Monday 10 June - 20:16:
"!! Thanks a lot for the exercise !!"
They got a perfect mark
Click here to go back to the exercise: Must and mustn't
Other exercises to learn English