"Seeing you are happy, " or "seeing you were sad".
you can use "had", seeing does not decide the tense. You can say
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好的,謝謝 Flyingstraw!原帖又加了一個問題:)
-虔謙-
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10/23/2016 postreply
16:33:54
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you can use:
-Flyingstraw-
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10/23/2016 postreply
16:46:12
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Okay, got it. Thank you again!
-虔謙-
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10/23/2016 postreply
16:55:39