Question

Turn the sentences into indirect speech. He said, "I will have been writing a dictation for two hours by the time you come to my class". He says, "I have received your letter". He said, "My mother works here".

Answer 1

He said he  would have been writing a dictation for two hours by the time you came to his class.  

He says  he has received your letter.

He said that his  mother worked  there.

Answer 2

He said that he would have been writing a dictation for two hours by the time I came to his class.

He says that he has received my letter.

He said that his mother works there.