She said, "I am working on my AI project now." - - - - - A) She said she was working on her AI project then. B) She said she worked on her AI project now. C) She said she had been working on her AI project then.
A) She said she was working on her AI project then.
They said, "We visited the museum two days ago." - - - - - A) They said they had visited the museum two days ago. B) They said they visited the museum two days before. C) They said they had visited the museum two days before.
C) They said they had visited the museum two days before.
“Why did he leave the party so early?” - - - - - A) Do you know why he had left the party so early? B) Do you know why he left the party so early? C) Do you know why he would have left the party so early?
B) Do you know why he left the party so early?