mr. jackson lived in the center of london but he had a hotel near the airport. there a lot of foreigners stayed for night. he didn’t know any ____25__ language but english and he found it difficult for him to understand the foreign visitors. sometimes he had to use the gesture to talk with them, and tried his best to make himself ___26___(understand). but he was often misunderstood (误解) and it brought him a lot of trouble. a friend of his___27___ taught a few foreign languages in a university would teach him. he was happy and studied hard. at first he learned some, but soon he found it wasn’t very easy to remember the words and expressions. his friend advised him to write down the useful expressions in his notebook so that he ___28___ use them when necessary. he did as he was told. he found it helpful for him to do so.