完形填空。通读下面短文，掌握其大意，然后在各题所给的（A、B、C和D）四个选项中选出最佳选项。
AMERICA’S first daughters, Malia and Sasha, are excited about getting a pet dog. But their father, President Obama, has told the girls they have to pick up the poop(狗粪)       the grass. It's true. Keeping a dog  _ __ lots of other work besides(除…之外) picking up the poop. For example, you’d better know __     the dog goes to bed and how it lives happily. It means you have to know the animals'      and be ready.
Li Hui, 15, of Beijing, once kept a rabbit and some goldfish. __    all of them died. "My rabbit ate the wrong food," said Li. "My       died because they ate too much!"
Xiao Ting, 15, of Shanghai, wanted to keep a dog a year ago. She got food and a new doghouse ready to       the dog, but she only kept the dog for one day. "I       thought a dog could be so active. It wouldn't stop barking(吠). My father had to walk      at 3 o'clock in the morning!"
"You’d better think it is like your      . " said Liu Yining, a  _        Beijinger. She is a (an)       pet keeper. Her family has kept a dog named Pipi for three years.      Pipi first came to Liu's home, it made her house dirty everywhere. It took a long time to teach Pipi to go to the toilet. She talks and plays with Pipi a lot. She really       Pipi.
__    a pet means you have to be patient and caring.

A．under B．with C．of D．from

A．asks B．needs C．tells D．says

A．what B．why C．when D．how

A．habits B．food C．home D．health

A．Because B．And C．So D．But

A．rabbit B．goldfish C．dog D．cat

A．know B．wait C．welcome D．choose

A．already B．always C．ever D．never

A．me B．it C．you D．her

A．dog B．toy C．friend D．student

A．14 years old B．14-years-old C．14-year-old D．14 years-old

A．dangerous B．interesting C．successful D．friendly

A．when B．before C．if D．so

A．cares about B．worries about C．talks about D．thinks about

A．Keep B．Keeping C．To keep D．Kept