I ________ been hit by a car, but luckily I just managed to get out of the way. should have must have can have could have

The correct phrase to complete the sentence is "could have."

Explanation:

Using "could have" suggests a possible past scenario where you were in a situation that might have led to being hit by a car, but you were fortunate enough to avoid it. The other options convey different meanings:

1. Should have: Implies a sense of obligation or expectation that did not occur.
2. Must have: Indicates a strong certainty about something that likely happened, not fitting here since you didn't get hit.
3. Can have: This is not a standard construction in this context.

So, the completed sentence would be: "I could have been hit by a car, but luckily I just managed to get out of the way."