单项选择题

The idea for the new project came to Jack ______ to his study recently.

A．while devoting
B．while devoting himself
C．while he was devoted
D．while devoted
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单项选择题
To ______ did you speak on the campus
A．who
B．whom
C．which
D．those
单项选择题
______ is accepted as wrong is not necessarily wrong.
A．It
B．That
C．What
D．That it
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