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(he)plays basketball after school.
He
These are (I) books, and those are (you) books.
my，your
Who is (they) teacher?
their
(we) classroom is big.
Our
Look at (they).They are so strong.
them
Let (we)sing a song together.
us
Come with （I）.
me
I want to buy some balloons for (she).
her
