a pair of后面加什么词

例句：

My mummy got/ bought me a pair of new shoes.

我妈妈给我买了一双新鞋。

That's not the right way to hold a pair of scissors.

那样拿剪子不对。

A pair of oxen, yoked together, was used.

把两头牛用轭套在一起使唤。

He wore old jeans and a pair of sneakers.

他穿一条旧牛仔裤，脚蹬运动鞋。