Explanation for being late
A: Hello?
B: Ms. Montgomery? This is Richard Thomas. I’m sorry to bother you at home, but I’ve got a bit of a problem.
A: Oh? What’s wrong?
B: My daughter’s just banged up her knee pretty badly and I’m going to have to take her to the hospital. I’ll be about two hours late.

解释迟到的原因
A：喂？
B：蒙格玛利女士吗？我是理查德·托马斯。真抱歉您在家里还麻烦您。但我出了点小事。
A：哦，怎么了？
B：我女儿刚刚碰伤了膝盖，伤得很厉害。我正要送她上医院。大约得晚到两个小时。