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I saw this article from the web and I think it is worth to post part of the article in this forum. Following is the article ...AND REPORTED SPEECH Dear English Doctor, Please explain about word changes in reported speech. If you say to me "My sister is going to Chiang Mai", I can report...

I agree. This problem is a headache. Two principles contradict one another: 1) After a past tense of verbs of reporting, knowing, etc., continue in the past tense. 2) If something which is still true or universally true is reported or known, use the present tense. Conclusion: You can use...