Réponse :
Bonjour,
a) She is always cheerful! ===> ( to BE cheerful )
b) My friends seldom get into trouble.
c) Do you usually do your best?
d) I'm never late. ===> ( to BE late )
e) Does he often forget his school things?
Explications :
L'adverbe de fréquence se place avant le verbe. ( phrases b- c-e )
Après le verbe "be" ( phrases a- d )