fell OR had fallenHe off the trees many times before he grew up.He-- off the trees many times before he grew up.

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fellORhadfallenHeoffthetreesmanytimesbeforehegrewup.He--offthetreesmanytimesbeforehegrewup.fellORhad

fell OR had fallenHe off the trees many times before he grew up.He-- off the trees many times before he grew up.
fell OR had fallen
He off the trees many times before he grew up.
He-- off the trees many times before he grew up.

fell OR had fallenHe off the trees many times before he grew up.He-- off the trees many times before he grew up.
had fallen
用过去完成时态.