单项选择题I didn't help him. I would have however didn't have the money.
单项选择题The second injection should have been given once the first drug had taken effect.
单项选择题Gambling is lawful in this state.
单项选择题All dogs are capable of doing harm to human beings.
单项选择题Human facial expression differ from those of animals in the degree to which they can be deliberately controlled and modified.