I found discussion of an answer key for First Greek Book here, but the link given does not seem to be working. Here is one that works for me:
This looks like a learner saving his work as he goes along. Very conscientiously done! I’m a near-beginner myself, but I can see some outright mistakes, and in other places I disagree with the solution given but am not entirely sure who’s right. I am looking only at the English to Greek translation parts.
I did find earlier work viewtopic.php?t=711 with comments from a savvy user of this forum.
Sorry if I am not finding or posting in the right place. Brand new user.
Zembel