[محمد جمال البرنس]

1- if he had killed her , he would have gone to prison . (means that >>>
a-he went to prison because he had killed her .
b-he didn.t go to prison because he hadn.t killed her .
c-he didn.t go to prison because he was innocent .
d-he didn.t go to prison because he had been innocent .
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2-had he studied well , he would pass the exam . ( find the mistake)
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3-if you had helped me before , I ( help ) you now .