There is no elevator to success. You have to take the stairs.....
Modální slovesa
MUST
www.englisch-hilfen.de/en/exercises/modals/must_not.htm
www.englisch-hilfen.de/en/exercises/modals/must_not2.htm
www.englisch-hilfen.de/en/exercises/modals/must_not_need_not.htm
www.englisch-hilfen.de/en/exercises/modals/must_not_need_not.htm
www.englishexercises.org/makeagame/viewgame.asp?id=7521
www.englisch-hilfen.de/en/exercises/modals/must_not.htm
www.englisch-hilfen.de/en/exercises/modals/must_not_need_not.htm
www.englisch-hilfen.de/en/exercises/modals/must_not2.htm
www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-10201.php
www.tinyteflteacher.co.uk/learning-english/grammar/exercises/modal-verbs-deduction.html
www.englishexercises.org/makeagame/viewgame.asp?id=5140
www.englishclub.com/grammar/verbs-modals-have-to-must-not-quiz.htm