单项选择题
The second injection should have been given once the first drug had
taken effect
.
A．taken place
B．injected
C．worked out
D．worked
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单项选择题
Gambling is lawful in this state.
A．legal
B．irresistible
C．enjoyable
D．profitable
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单项选择题
All dogs are capable of doing harm to human beings.
A．damage
B．injury
C．danger
D．wound
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