[quote="ggomad"]Kindly review the following question I struck upon in my studybook.
All applicants need (to) go through medical exams ____ the instruction of the HR department, or else they will not be considered for any position.
A) to B) on C) for D) at
I thought both B and D could be correct. My studybook says the answer is D without decent explanation. It's kind of confusing.
What would you advise me?
In that context, at means, with reference to; as per, in accordance with. On in that context refers to, based on.
Good question! It's often not that easy to tell. :( Mind you, as per (the) instruction is a common phrase. :)In which similar context can "on" be used, and what differences should I take notice to distinguish these two difficult prepositions in the above sentence or any other similar ones?
All the best,