When products made in factories，they are thrown away as garbage

下列句子中加点字的活用，与其他三句不同的一项是（ ）

The book was written in 1946, ___ ___ the education system has witnessed great charges.

The old man, ____________ abroad for twenty years,is on the way back to his motherland[ ]

My daughter did very well in the midterm exam, ________ first on the list of all the students. [ ]