make / let / be allowed to

http://www.perfect-english-grammar.com/let-or-make-exercise-1.html

http://www.englishexercises.org/makeagame/viewgame.asp?id=8730

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-28284.php

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-72879.php

http://perso.wanadoo.es/autoenglish/gr.allow.i.htm

http://www.ejerciciodeingles.com/ejercicios-distinguir-make-let/