Answer:
From the given sentence, it seems like Greg believed that Mom would not enforce the honesty pledge because of something that happened. To provide a clear and concise answer, we need to think about possible scenarios or events that could make Greg think this way.
Here are a few examples:
1. Greg thought Mom would not hold him to the honesty pledge after she discovered his sister had broken the same pledge.
In this scenario, Greg might believe that if Mom found out that his sister had broken the honesty pledge and didn't enforce any consequences, she might also not enforce it with him.
2. Greg thought Mom would not hold him to the honesty pledge after she saw him helping a friend cheat on a test.
In this case, Greg might think that if Mom saw him helping a friend cheat and didn't say anything or reprimand him, she might not take the honesty pledge seriously.
3. Greg thought Mom would not hold him to the honesty pledge after she found out he had lied to protect a friend.
In this situation, Greg may believe that if Mom discovered he had lied to protect a friend and didn't address it, she might not take the honesty pledge seriously either.