In one of my grammar tests, we were given a question where we had to fill a blank with conjuction. So, the question was- I fell asleep _____ the lesson. I know, "during" is the most appropriate answer, but I thought that it is not a conjuction, so I wrote "at" as the answer. Well, I think my answer is also correct, because lesson can also be used as a noun, I mean object or something. Can't ma'm atlleast award me 1/2 mark for it. Come on, u have to answer this. I do not want any of my marks cut.