单项选择题
A．he brought him a different watch B．he was sure Bob had stolen the watch C．he could see that Bob had a knife D．he didn’t listen to his speech
A．The use of computers B．The large number of children C．The peaceful atmosphere at home D．The better living condition
A．are seldom punished for doing wrong B．can find something new and interesting all the time C．always want to be young D．live a perfectly happy life if they always behave well