Is this the mark ( ) you bought the duck?

问题描述:

Is this the mark ( ) you bought the duck?
A where B that C 不填 D which
说明理由,
说明不选D的原因,

Is this the market where you bought the duck?完整的从句是You bought the duck in the market.能代替in the market 的只有where 或 in which因此 where 相当于 in which不能选which,不完整...