Unit 3（）Text A. VocabularyFill in the blank in the following sentence with one of these words and change the form if necessary. (anathema, obsession, indulge, provocative, spark, harness, virtual, propel, fickle, generate)19.　Adopted at birth by a couple

Unit 3（）Text A. VocabularyFill in the blank in the following sentence with one of these words and change the form if necessary. (anathema, obsession, indulge, provocative, spark, harness, virtual, propel, fickle, generate)19.　Adopted at birth by a couple in the U.S., Sara has always wanted to find her birth parents, but recently it's become an （）.
正确答案：obsession