He bought me a book __（包含）lot of useful information
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Heboughtmeabook__（包含）lotofusefulinformationHeboughtmeabook__（包含）lotofusefulinformationHeboughtmeaboo
He bought me a book __（包含）lot of useful information
He bought me a book __（包含）lot of useful information
He bought me a book __（包含）lot of useful information
contained
分词作状语
contains
which contains
containing