根据提供的英语单词，请求GPT生成10个通俗易懂的句子，以解释该单词的意思。

perplexed
1. I was perplexed by the complex instructions for assembling the furniture. 
2. The math problem left him feeling perplexed and confused. 
3. She looked perplexed when she couldn't find her keys. 
4. The detective was perplexed by the new evidence in the case. 
5. I was perplexed by his sudden change of attitude towards me. 
6. The student was perplexed by the question on the test. 
7. John was perplexed by the lack of response from his friend. 
8. She was perplexed by the contradictory information she had received. 
9. The driver was perplexed by the confusing road signs. 
10. The news left me feeling perplexed and uncertain about what to do next.