Question

1.flock of birds flew over the bridge​

Answer 1

The birds flew over the lake" is the better sentence because the preposition over is used to say that something is moving across, or from one side to the other, of something else. Above is not used in this way.

Answer 2

Explanation:

It tells us that something is moving from one place to another. The birds flew over [=upward and across] the lake. They drove