由于非承包商责任造成承包商自有机械设备窝工，其索赔费按（）计算。
A.台班费
B.台班折旧费
C.折算租金
D.折算租金乘以规定的降效系数
参考答案：B
— When did the twins go to the aquarium?
— _______. [ ]
A. Three days ago.
B. Next month.
C. For four days.
Most of the students near______ Arthur was sitting appeared to be taking notes．So Arthur pretended to do the same．
A．which
B．that
C．whom
D．where
