单项选择题

Techniques for ______ sleep would involve learning to control both mind and body so that sleep can occur.

A．pushing
B．cultivating
C．promoting
D．strengthening
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单项选择题
Word had come from the manager ______ a new transaction would be concluded.
A．who
B．that
C．which
D．when
单项选择题
The governess agreed to teach the temperamental child ______ she was given complete authority.
A．whether
B．for
C．that
D．provided
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