Reported Speech-backshifting tenses

"I am busy."

Tom said that he _________ busy.

"I need some help."

Tom said that he _________ some help.

"I am having a good time."

Tom said that he ________ a good time.

"I have finished my work."

Tom said that he _________ his work.

“I finished it an hour ago.”

Tom said that he ________ it an hour before.

“I will arrive at noon.”

Tom said that he ___________ at noon.

“I am going to be there at noon.”

Tom said that he ___________ there at noon.

“I can solve that problem.”

Tom said that he ___________ that problem.

“I may come early.”

Tom said that he _________early.

“I might come early.”

Tom said that he __________early.