Dưới đây là các câu trả lời đúng cho các chỗ trống trong đoạn văn:

35. **C. closed**
36. **B. excited**
37. **C. relaxed**
38. **A. every**
39. **B. However**

Vì vậy, đoạn văn hoàn chỉnh sẽ như sau:

Teenagers having exams may feel stressed for different reasons. Their future may depend on their exam results. And many of them will probably be afraid that their performances will not be as good as their friends’ and may feel worried about being **closed** negatively to them. They may feel so **excited** by the amount of studying which they need to do. To obtain a good result, they may have to give up **relaxed** leisure activities such as doing sports and listening to music. Teenagers **every** suffer from exam stress may show a variety of symptoms including loss of appetite, being unable to sleep and a lack of motivation to study. **However**, it is important for teachers and parents to watch out for these signs and to be as supportive and encouraging as possible.