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I'm very well this morning.......everything was fine................but..............I felt not very well in the afternoon......

suddenly, i got a headache........I don't the reason!!!!!!!!!maybe our building is bad ventilated!!! maybe the weather makes me sick!!!maybe i'm just too tried and need a rest..........

The headache makes me worried about the test of text book tomorrow.........

Hope everything can be fine.......and the headache doesn't bother me any more!!!!!!!!!!!!!!!Please!!!!!!!!!!!!