—I’m so tired,helping the family with the work in the field.—Why not take a rest,then?—.

—I’m so tired,helping the family with the work in the field.
—Why not take a rest,then?
— .
A. Because I have no time
B. Maybe I should
C. Sorry,I can’t tell you about it
D. I don’t know it

A. Because I have no time(答案→)B. Maybe I shouldC. Sorry,I can’t tell you about itD. I don’t know it解析：填这个空的关键是对上句话Why not take a rest,then?的理解。这句话表达的是建议 “那你怎么不休息一会呢？”, 并不是询问原因。故选B。

谢谢了