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play
Step 2 Let’s think
It’s so uncomfortable!
We should _____ enough ___________ for a pet dog.
have
place / space
I get sick. I think I’m dying.
A pet dog may get ____ and ______.
It will _____ one day.
sick
old
die
Step 2 Let’s think
What problems are caused（引起） by pet dogs?
They leave their _______ in the street.
rubbish
Dogs may ____________ people.
scare / frighten
attack / bite
Dogs ______ a lot.
bark
Mind map
Problems
Step 2 Let’s discuss
What other problems are caused（引起） by pet dogs?
（1）bark a lot
(2) leave their rubbish
?
?
?