将下列句子中的直接引语变为间接引语

将下列句子中的直接引语变为间接引语
1.“I am doing my homework,”she said.
She said that __________ ___________ doing ___________ homework.
2.My geography teacher said,“The sun is bigger than the earth.”
My geography teacher said that the sun __________ bigger than the earth.
3.“You can come here before five,”he said.
He said that I ___________ ___________ _____________ before five.
4.“Did you finish the work last week?”he asked.
He ________ _________ I had finished the work the week _________.
5.She said,“You can sit here,Jim”.
She _________ Jim that he ___________ sit there.