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王老师:19139051760(拨打)
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第1题

She spent all night ______ about the future that lay ahead of her.
·thinking
·think
·to
·thought
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第2题

What will you ______ at sevetomorrow evening
·be doing
·are doing
·done
·did
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第3题

Sunlight consists ______different wavelengths of radiation.
·of
·by
·in
·to
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第4题

Students cagaivaluable experience by working ______ the campus radio or magazine.
·on
·in
·at
·of
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