hi evry one i'm in a big proplem is: i don't know who i transforme this sentens to passive forme please any one corect my falses,look: 1
she had cleaned the boared befor her friends finished writing
my answer is
the boared had been cleaned befor her friends were finished writing
i want the answer please i'm waiting
thanks

but i think u must add this
the boared had been cleaned by her before her friends finished writing

yes sorry i forgot it but thank you verry much thanks