单项选择题

Jane was reading a piece of science fiction, completely ______ to the outside world.

A. being lost
B. having lost
C. losing
D. lost
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单项选择题
______, PC spending will continue to slump, particularly in the consumer market.
A. To look forward
B. Looked forward
C. Looking forward
D. Being looked forward
单项选择题
Before the bottle was a third ______, he began to tell me the story.
A. vacant
B. hollow
C. finish
D. empty
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