单项选择题

Investigators agreed that passengers on the airliner（）at the very moment of the crash.

A. should have died
B. must be dying
C. must have died
D. ought to die

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单项选择题
While being questioned on the court, the man denied（）the old lady’s necklace.

A. having taken
B. taking
C. to have taken
D. to take
单项选择题
(33)（）

A. attainments
B. feasibility
C. entertainments
D. evolution
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