单项选择题


A．establish
B．establishing
C．established
D．to establish
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单项选择题
A．having caughtB．having been caughtC．being caughtD．catching
A．having caught
B．having been caught
C．being caught
D．catching
单项选择题
A．admittingB．takingC．havingD．denying
A．admitting
B．taking
C．having
D．denying
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