Teachers at No.3 Middle School want to know about how the students of Grade Eight spend their weekends.100 eighth-grade students gave their answers.They also asked these students\’ parents what they wanted their children to do at the weekend.The results can be seen from the diagrams below.

Students who choose to go back home to study believe that studying at home helps them relax and work better.And outdoor-activity lovers think that taking exercise is a great way to refresh（使恢复精力的） themselves so that they can study better at school.And students living far away from school want to stay at school to save every minute to study.For some parents,grades are the most important while some parents say that students should have time to relax themselves when they are free.

根据短文和图表（Diagrams）内容,选择最佳答案.
（1）The teachers at No.3 Middle School asked ______questions.
A.teachers and parents
B.doctors and nurses
C.parents and students
D.workers and teachers
（2）______ eighth-grade students want to go back home to study on the weekend.
A.65
B.18
C.15
D.2
（3）31% of the parents want their children to ______ on weekends.
A.stay at home
B.do sports
C.go shopping
D.do outdoor activities
（4）Some students choose to stay at school to study because ______.
A.their home is far from school
B.they don\’t like their homes
C.they want to study with friends together
D.they can\’t study well at home
（5）We can learn ______ at the weekend from the passage.
A.teachers want their students to relax
B.100 students all like staying at school
C.most students want to exercise at home
D.11%of the parents want their children to go shopping with friends