Living in poverty, John sold for 500 dollars the _______ of his mother's first work which
A. document
B. file
C. duplicate
D. manuscript
【C13】______
A. with
B. by
C. to
D. at
【C10】______
A. regarded as
B. defined as
C. looked as
D. thought as
【C19】______
A. she discovered
B. she did discover
C. did she discover
D. does she discover
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