单项选择题

John felt a little disappointed and was about to leave, ______ something occurred which attracted his attention.

A．while
B．when
C．until
D．unless
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单项选择题
Language, culture and personality may be considered ______ of each other in thought, but the truth is that they are inseparable.
A．independently
B．separately
C．instinctively
D．interdependently
单项选择题
The medical treatment you have received from the hospital will ensure you a speedy ______ from your illness.
A．restoration
B．renewal
C．recovery
D．retreat
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