During the attendance check at university, my friend did the roll call for me.

He was asked to proxy for someone during the attendance check in class.

I looked for a cheap hotel to save on the cost of accommodation for my trip.

I looked for a cheap hotel to save on accommodation costs.

She is learning how to use pronouns.

I forgot to pay the bus fare.

The train fare is high, making my monthly expenses tough.

Who wrote this draft?

The doctor examined his semen sample.

My blood type is A.