用所给单词的适当形式完成短文

visa, qualification, preparation, recommend ,substitute, adjust, requirement, contradict ,autonomous , occupy

 
Xie Lei flew to London to study for a business         after she got her      . She chose to board with a host family, which could be her      family when she was homesick. She highly      the      year to foreign students because it would help them to      to the academic      of a Western university. There the students are encouraged to      others and be      learners. Although Xie Lei was      with work, she tried her best to balance her study and a social life.
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