19.16.There are many ___________ in Li Ming's family.
A.books
B.rules
C.rooms
17.Li Ming isn't allowed to watch TV or surf the Internet __________ too much.
A.at home
B.at school
C.in the school library
18.Li Ming has to __________ before 11:00 pm.
A.drink milk
B.watch TV
C.go to bed
19.Li Ming doesn't agree to clean his room every morning because __________.
A.his room is not always dirty
B.he is busy with schoolwork
C.he doesn't like doing housework
20.Li Ming thinks his parents won't do anything that is __________ for him.
A.good
B.bad
C.helpful.