听材料，回答问题。
（1）When did they do the survey？
A.Yesterday.
B.The day before yesterday.
C.Last week.
（2）How many students read English every day？
A.8.
B.10.
C.6.
（3）How often do half of the students read English in the morning？
A.Three times a week.
B.Four times a week.
C.Five times a week.
（4）Why does 20% of the student read English in the morning once a week？
A.They think it's boring.
B.They can't get up early.
C.They don't like English.