Many animals may be trained to do simple jobs if they know（）

单项选择题Mr. Hill（）

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

单项选择题Why was Roger sad to hear what the old man said Because he was afraid nobody（）

A．would talk about football with him
B．liked to cut his hair
C．could cut his hair as he wanted it
D．would become his friend