单项选择题
A．to look for Mr. Hill's uncle B．to see Mr. Hill about some trouble at the hand C．to visit Mr. Hill, his uncle D．to meet his mother
A．hardly sees his sister B．sees his sister only at Christmas time C．sees his sister on Jack's birthday D．always sees his sister
A．Scientists consider apes may drive trains some day. B．Apes have worked in some factories. C．Apes may one day be used to gather crops. D．An ape is not a large monkey.