您要查找的是不是：
- My wife is expecting me at home. I must be off now. 我妻子在家等我，我得告辞了。
- My sister is expecting me ,so I must be off now . 姐姐在等我，我得走了。
- The teacher is expecting me, so I must be off now. 老师在等我,我得走了。
- I have to be going now. I must be off now. 我要告辞了。
- I must be off now to see after him. 我现在一定要去照料他了。
- It is getting dark. I must be off now. 天越来越黑,我得走了。
- My sister is expecting me, so I must be off now. 姐姐在等我,因此我得走了。
- My wife is expecting me at home. I must be off now. So long! 我妻子正在家等着我呢。我必须要走了。再见！
- Sorry, I must be off now. 对不起，现在我必须走了。
- I am sorry, I must be off now. 对不起，我该走了。
- I must be off now. 我这就得走了。
- Well, I must be off now. 好了，我该走了。
- I think I must be off now. 我想现在我该走了。
- I must be off now. thank you and see you tomorrow. 我得走了，谢谢你，明天见。
- Excuse me, I must be off for a moment. 对不起,我得离开一会儿。
- I must be off; I'm meeting a comrade from Xi'an at six. 我得走了，我6点要会见一位西安来的同志。
- Well, it is getting late. I must be off now. Nice to meet you. 天晚了,我现在必须得走了,见到了你真高兴。
- I must be off I am meeting Brand at six. 我得走了，6点钟我要会见布兰德。
- I must be off I'm meeting a comrade from Xi'an at six. 我得走了，我六点要会见一位西安来的同志。
- Well,I must be off and have a look round before dinner with my family. 我得走了，我得在晚饭前带家人到处走走。
