I was standing at the counter of the museum gift shop making

I was standing at the counter of the museum gift shop making a purchase when the couple came near to the exit.
这是怎么个句式?making a purchase是什么成分?这句话的汉语意思什么?还有near不是副词或形容词,怎么后面还接to
But what dose he get out of the art?
这 get out of毛意思?
还有一个，He extended it into a long stick and then tapped his way into the coatroom to get his wife's jacket