Would you find me something wrong in the following text between the underlines?
A sudden crippling illness may affect a man in various ways. He may (A)[ lose the will to live ], and become interested only in himself and (B)[ in the hardship he endures ]. He may be seized by a fierce determination to succeed in the world of normal men (C)[ in spite of his physical weakness ]. In the latter case he may be more successful than (D)[ he has been ], (E)[ if illness had never attacked him ]. (F)[ Such was possibly ] the case with F. Roosvelt.