问题
选择题
My father isn't ____________ his shop. He is ____________ home. [ ]
A. on, in
B. in, on
C. in, at
答案
答案：C
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My father isn't ____________ his shop. He is ____________ home. [ ]
A. on, in
B. in, on
C. in, at
答案：C
要求：根据上述资料，回答下列问题。