Answer:
As we came into port, I couldn't believe my eyes.
Explanation:
this is showing amusement and shock, making it correct.
This can happen after the engagement but sometimes does happen after marriage.
Neighbours here should each other aid, For if one dies, it’s on your back
His burden surely shall be laid.
I don't think so. How could a boy so young really be expected to understand what horrifying things are going on in his back yard. He would have no way of understanding why his dad hated the Jews, and there was no way he would have understood the gas.