句子:1. We've been worried. 我们一直很担心。2. It's not your fault. 这不是你的错。3. Do you want to take a walk? 你想散散步吗?4. Can I take a message? 我能留个口信吗?5. I often borrow books from the library. 我经常从图书馆借书。6. Japan and South Korea are neighbors. 日本和韩国是邻国。7. We'll get there in three hours. 我们将在三小时内到达那里。8. Is this mine? 这是我的吗?9. When did you come to Boston? 你什么时候来波士顿的?10. The old man asked me a favor. 那位老人请我帮个忙。 别忘了