Dear Merry，
Recently，I have trouble with my study．
In school I can't listen to teachers carefully because I always feel tired and sleepy．I don't spend time with friends after class either because I think it's a waste of time．I even miss writing some answers in the test．
At home，I can't get my homework done every night．My parents don't let me stay up．So
I have to get up early the next morning to finish it．Lately，I even get a bad headache．
How can I solve these problems？
Yours，
LiuYa
Dear Liu Ya，
When you have trouble listening to teachers carefully in class，you can ask your teachers or deskmate to remind you often．Then spending time talking about many different things with friends can make you happy．It's not a waste of time．As for homework，when it's hard to get finished，one thing you can try is setting goals for yourself．Ask your parents to help you．You must take a break，especially if you don't feel well．You might be surprised but a short break can help you get more done!Lastly，if you don't worry and have enough sleep，your headache will leave you．
Yours，
Merry

81．Liu Ya wrote the letter to Merry in order to ．
A．ask for help
B．express worries
C．share her experience
82．Liu Ya doesn't want to stay with friends after class because ．
A．she needs to sleep
B．she thinks it's a waste of time
C．she has trouble with her classmates
83．Merry thinks ．
A．taking a break is necessary
B．being with parents is helpful
C．setting goals by parents is important
84．According to the underlined part，what might Liu Ya's teacher say？
A．Sleep for a minute．
B．Listen carefully．
C．Stop talking．
85．From Liu Ya's letter，we can find that she is too ．
A．passive
B．proud
C．stressed．