翻译以下短语并完成句子

1.turn to sb. for help ____

2. turn to Page 20____

3. turn to the English dictionary _____

4. He often____me when he is in trouble.

   当他遇上麻烦时常常向我求助.

5. After he left the university he became a teacher, but later ____ joumalism

   大学毕业后,他当了老师,但后来转向了新闻业.

6. Their talk____the change that had taken place in the city.

     他们的话题转到城市发生的变化.