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 percent（百分之）of the students feel unhappy, and the         from studies is the main reason for their unhappiness.
“More than 50 percent said they were under pressure and 70 percent         get enough sleep,” Li said. “It shows that middle school students are not as happy          people think. They worry a lot, and they can get angry easily.”
Li also said that over 90 percent say their happiness has         to do with how much money they have. Instead, they care about their relationships（关系）with friends, teachers and parents. “Students always feel better when they get _       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．something B．nothing C．anything D．nobody

A．along B．up C．off D．down

A．any B．a number of C．much D．a lot