Listen and complete the dialogue. (Nghe và hoàn thành đoạn hội thoại.)

Jo: Hi, Tom. How was your trip to Japan?

Tom: It was a disaster! I (1) _____ read about their customs beforehand - then I (2) _____ not have embarrassed myself so badly.

Jo: Why? What happened?

Tom: Well, Aki’s parents took us to dinner one night. I had a really bad cold. Aki (3) _____ have told me not to blow my nose in public! Everyone kept staring. They (4) _____ have thought I was so rude! When Aki told me later, I felt terrible about it.

Jo: I’m sure you needn’t have done. How could you have known?

Tom: Anyway, I bought a gift for Aki’s parents. I sent it on Monday, so it (5) _____ have arrived by now. I probably didn’t need to send them anything, but I really wanted to apologise.