TPN配制时间不能超过（）
A.20h
B.24h
C.36h
D.48h
E.72h
参考答案：B
下列不属于消费税纳税期限的是（）日。
A.1
B.3
C.5
D.7
They are doing _____ homework at home. [ ]
A. our
B. them
C. their
D. one's
