【答案解析】[听力原文] 71-73 Hello, Mr. Smith. This is Norman Mower from Jack's Roofing. We got your message yesterday about being out of town for the next two weeks. We wanted to let you know that you don't need to worry. From now on, our work won't involve needing to go inside the house anytime. Previously, we had to enter the house because of the leak on your north wall. That section has already been finished up. Therefore, the rest of the roofing job will only involve outside work. If you would still like to voice some concerns about going on vacation before we're finished, please call us anytime between 8 a.m. and 5 p.m. We'd be more than happy to answer any questions you may have.