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She said,'I am going to a conference'. *

He said,'I have lost my passport'. *

They said,'We have been on holiday'. *

She said, 'I don't understand'. *

They said,'We are staying for three weeks'. *

She said that she was going to a conference.

He said that he had lost his passport.

They said that they had been on holiday.

She said that she didn't understand.

They said that they were staying for three weeks.