In many people’s eyes, middle school students are happy and carefree(无忧无虑). But is it the truth? And what     students happy or unhappy?
To find out the answers, Li Jiahui, a student in Pinggu No. 3 Middle School, Beijing, spent six months      students’ sense(感受) of happiness last year. The      girl made a survey with questions such as “Are you feeling happy?” and “What makes you unhappy?”
After studying the answers from 284 students, Li learned that      40% of the students feel unhappy, and the     from studies is the main reason for their unhappiness.
“More than 50% said they were under pressure and 70%      get enough sleep,” Li said. “It shows that middle school students are not so happy      people think. They worry a lot, and they can get angry easily.”
Li also said that over 90% say their happiness has nothing to do with how much money they have. Instead, they      their relationships(关系)with friends, teachers and parents. “Students always feel better when they      well with each other,” Li said.
After her survey, Li listed      tips that may make students happier, such as: Treat(对待) yourself better, be kind and polite to your friends and relatives, and try new things.

A．helps B．wants C．makes D．keeps

A．to study B．studying C．study D．studied

A．15 years old B．15-years-old C．15-year-old D．15-year-olds

A．about B．than C．below D．inside

A．pressure B．difficulties C．knowledge D．interest

A．don’t B．hadn’t C．did D．didn’t

A．so B．and C．like D．as

A．be careful B．care about C．care for D．take care of

A．get along B．get up C．get off D．get down

A．any B．a number of C．much D．a lot