摘要： They are playing basketball.

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They are playing ________ basketball over there．

A.
a
B.
an
C.
the
D.
/

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They are playing ________ basketball over there．

[　　]

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They are playing ________ basketball over there．

[　　]

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They are _____ basketball now.

A. Play
B. plays
C. to play
D. Playing

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They are_________basketball now.

A.Play
B.plays
C.to play
D.Playing

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