Fill in the blank with a suitable preposition.
The kids ran _______ the classroom when it started to rain.
The preposition ‘in is used to refer to being surrounded by a building or place, whereas ‘inside’ is used while denoting the movement from outside to an enclosed space. In the given sentence the kids are moving from outside the classroom into the class, because of the rain. Therefore option C is correct whereas option A is incorrect. On the other hand ‘over’ is used to speak about being in contact with a surface. The class is not a surface/object on top of which the kids can run. Hence option D is incorrect. Whereas ‘with’ is used to denote a tool or company, which is not the case here. Therefore option B is incorrect.