学校电台“teenager online”栏目每天能收到不少同学的咨询电话，请你根据以下同学的烦恼给出合理建议。
Students
|
Problems
|
Advice
|
Mary
|
Do badly in English
|
1. ________________________
|
Lucy
|
Feel tired
|
2.________________________
|
Tom
|
Feel lonely at school
|
3. _______________________
|
Bob
|
Get too fat
|
4. _______________________
|