A. Combine the following pairs of sentences after the models, using the restrictive attributive clause (限制性定语从句) to modify the noun before it. Model 1: - She knew they were having the same troubles. - She had experienced these troubles. Key: - She knew they were having the same troubles that she had experienced. Model 2: - He received a letter. - The letter announced (宣布) the death of his uncle. Key: - He received the letter which announced the death of his uncle. 1. - She is the girl. - The girl wrote the book Looking for Trouble.