（）Thechildren_____football.A

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A. is playing)f1N*J-q:X;o:Q*f6J3l;N

B. are playing)f1N*J-q:X;o:Q*f6J3l;N

C. play the)f1N*J-q:X;o:Q*f6J3l;N

D. play a)f1N*J-q:X;o:Q*f6J3l;N