μοχθεῖν τε βροτοῖσ(ιν) άνάγκη → and you mortals must endure trouble (Euripides' Hippolytus 208)
greatly: P. and V. μέγα, μεγάλα, σφόδρα, κάρτα (Plato, but rare P. ); see greatly.
strongly: P. ἰσχυρῶς, P. and V. ἐρρωμένως; see vigorously.