（1）What kind of housework do the students do most? ______
A.Doing the dishes.
B.Making dinner.
C.Wash the clothes.
D.Cleaning the room.
（2）According to the table,how many students take part in the survey? ______
A.25.
B.50.
C.5.
D.55.
（3）The table mainly introduces ______.
A.the housework done by Class 5 on the weekend
B.hobbies of the students in Class 5
C.time spent on homework on the weekend
D.learn housework on the weekend