单项选择题

She is () interested in physics. She often works at it until () into the night.

A．deep; deep
B．deep; deeply
C．deeply; deep
D．deeply; deeply

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单项选择题
What shall we use for power when all the oil in the world has ()

A．given out
B．put out
C．held up
D．used up
单项选择题
You()be tired after such a long journey.

A．must
B．should
C．can
D．have to
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