At one time, the majestic American chestnut was so prevalent that it was said a squirrel could jump from tree to tree without once touching the ground between New York State and Georgia.
so prevalent that it was said a squirrel could
so prevalent that a squirrel was said that it could
so prevalent for a squirrel to be said to be able to
prevalent enough that it was said a squirrel could
prevalent enough for a squirrel to be said to be able to
请教老师B错在哪里?
it is said 意思是“据说” ,而且B的it也指代不明
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