单项选择题
A．for B．as C．in D．at
A．People walled their yards with fences. B．The settlers in early years needed their neighbors’ help very much. C．People get used to American openness. D．It is difficult to follow the American way of lif
A．in our eyes B．only when we think hard about something C．only under the direction of a psychologist D．in every person’s mind