单项选择题

She forgot ______ her exercise again.

A．to do
B．doing
C．do
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单项选择题
______ my mother ______ my sister goes shopping these days.
A．Either, nor
B．Both, and
C．Neither, nor
单项选择题
______ father is a teacher.
A．Tom and Mike's
B．Tom's and Mike's
C．Tom's and Mike
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