Translate the following sentences using a modal equivalent:
Un jour tu seras adulte, alors tu pourras manger autant que moi. = One day you will be an adult, then you [?] as much as I do.
Il devra dormir plus. = He [?] more.
Ils pourront fumer quand ils seront dehors. = They [?] when they are outside.
Il va le dire à sa mère. = He [?] his mother.
Nous n'aurons pas à nous lever si tôt. = We [?] up so early.