He has high standing in the community for his charity work.
Sir, I'm having difficulty understanding the math.
Sir, I'm having difficulty understanding the topic.
Sir, I'm having difficulty understanding the class.
Standing at the subway station, I wait for a train.
Standing at the airport gate, I wait for my flight.
Sir, I'm having difficulty understanding the subject.
I don’t speak about this matter for not understanding it.
Tom doesn’t speak about the project for not understanding it.
The teacher keeps him standing in the class for not learning his lessons.
There was a misunderstanding among all the members of the family on a trifle thing.