下列各句中，加线的成语使用不恰当的一项是(　　)

Several department stores, including the one we usually go to, ____ sidewalk sales this week— Let’s go and have a look.[ ]

81. Male and female students are quitedifferent from each other ______ the age at which they begin to develop anintellectual self-discipline.

The meat on the plate so delicious. Let’s try it together.

The foreigner was talking to the children in the park ______ he was familiar with them