Fill in the blank with a suitable Phrasal Verb from the options given below :

While walking along the road side, Raju __________ one of his old schoolmates.

Ran into

The most suitable phrasal verb to fill in the blank is ran into.

The phrasal verb run into means to meet someone by chance.

The other options are not as suitable. Ran out means to use up all of something. Ran over means to hit someone or something with a vehicle. Ran through means to move quickly through something.