单项选择题

When can Jack phone (电话，电话机)Mr. Smith

A．Jack can phone him before 9:00.
B．Jack can phone him from 9:00 to 10:00.
C．Jack can phone him until 9:00.

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单项选择题

When can Jack phone (电话，电话机)Mr. Smith 您的浏览器不支持 audio 元素。