Choose the correct preposition (ON, OUT, INTO, AWAY FROM, OVER) to complete each of the following sentences: 1. Bob nearly ran an old man while he was driving his car. 2. We've run of salt. Could you, please, buy some more? 3. Because of global warming, it's very important that we try to stop using cars and other vehicles that run petrol or gasoline. 4. We can't run the facts. 5. We ran your brother at the mall last night.

1. Bob nearly ran INTO an old man while he was driving his car.
Explanation: The preposition "into" is used to show movement or direction towards someone or something. In this sentence, it indicates that Bob almost collided with the old man.

2. We've run OUT of salt. Could you please buy some more?
Explanation: The phrasal verb "run out" means to use up all of something, so the correct preposition is "out" in this case. It shows the depletion or absence of salt.

3. Because of global warming, it's very important that we try to stop using cars and other vehicles that run ON petrol or gasoline.
Explanation: The preposition "on" is used to indicate the source of fuel or power for vehicles. In this sentence, it suggests that cars and other vehicles use petrol or gasoline to operate.

4. We can't run AWAY FROM the facts.
Explanation: The preposition "away from" is used to show movement or direction from someone or something. In this sentence, it implies that we cannot escape or ignore the facts.

5. We ran INTO your brother at the mall last night.
Explanation: The preposition "into" is used to indicate accidental meeting or encountering someone. In this sentence, it suggests that the person unexpectedly met the speaker's brother at the mall.