朗读下面短文，体会、领悟加黑连接词引导的是什么从句，在从句中作什么成分。
What worries my classmate, Mary, a lot these days①is that she puts on too much weight and is frequently ill②.She has some doubts whether she eats too much fast food high in fat or sugar③.Also, with the College Entrance Examination approaching, she becomes more stressful and she couldn't sleep well these days.Maybe this is also the cause that she becomes fatter these days④， she thinks. How she becomes slimmer and healthier⑤has been her main task. So she wants to consult some experts and gain some instructions. But where she could get better suggestions and who will give her better advice⑥also puzzle her. It is her parents' suggestion that she should consult Professor Wang in Zhongshan Hospital⑦.Professor Wang suggests that she keep a balanced diet first⑧. She should eat vegetables and fruit high in fiber, vitamin and protein. What's more, if she wants to lose weight, she had better take regular exercise more than half an hour a day. Mary asked Professor Wang when she should take exercise⑨.Professor Wang advised her to take exercise at 5 o'clock in the afternoon because she will have more time to do sports.Thanks to Professor Wang, Mary has become much healthier now.
