or
or
The teacher congratulated the students ____ their bright result. (Fill in the blank with appropriate preposition/article)
The correct choice to fill in the blank is on. This is because when we say someone congratulates someone else, we typically use the preposition on to indicate the reason for the congratulations. In this case, the teacher is congratulating the students for their achievement, which is their bright result.
Here’s a quick breakdown of the options:
Therefore, on is the only preposition that correctly fits the sentence structure.
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