What did the followers of Yahweh expect?

It was Babylon, The Euphrates River which was supposed to be protecting the outside of Babylon was diverted by Cyrus's army so that it would be dry enough for them to walk through to the open gates that were left open.

the answers for the whole quick check is

1. b

2. b

3. a

4. c

5. b

6. a

7. d