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do→did
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单项选择题
A．Sell some of her books.B．Talk to some politicians.C．Do some research.
A．Sell some of her books.
B．Talk to some politicians.
C．Do some research.
单项选择题
A．He is afraid of misunderstanding.B．The man wants to confuse her.C．To show off his skill in drawing maps.
A．He is afraid of misunderstanding.
B．The man wants to confuse her.
C．To show off his skill in drawing maps.
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