Problems
n. 问题；难题（problem的复数）
✅ 同义词
🔴 反义词
🗣️ 情景例句
That's it.
就这样。
Thank you very much. Here's $10.00. Give me $1.00 back, please.
太谢谢你了。这是10美元，找我1美元就行了。
No, it's not him.
不，不是他。