单句改错
①Struggled in a world of silence and darkness, Helen Keller seemed to be simple-minded.
②The three Bronte sisters adopted this practice, Mary Ann Evans did the same.
③We decided to fight against this unfair system which prohibits us blacks sitting where we like.
④Our friendship had developed quickly over the weeks that followed.
⑤Maybe if I studied science then,I would have been able to give you more help.