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.
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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.
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